Purpose-Built for UK Designer Handbag Dealers
Inventory management software for dealers of pre-owned designer handbags. Record authentication, serial numbers, condition grades, and inclusions on every piece. Push to Shopify, manage consignment and fairs, and stay HMRC-compliant on the VAT Margin Scheme. Built by a former UK dealer who left the trade to solve this full-time.
Inventory
6 items
Art Deco Diamond Ring
JWL-2026-0089
Cartier Tank Watch
WCH-2026-0034
Georgian Silver Candelabra
ANT-2026-0056
Hermès Birkin 25
HBG-2026-0012
Edwardian Sapphire Pendant
JWL-2026-0091
Rolex Datejust 1601
WCH-2026-0035
Selling pre-owned designer handbags has unique demands that generic inventory software simply cannot handle. Spreadsheets and off-the-shelf tools leave gaps that cost you time, money, and reputation in a market where buyers are sceptical by default.
A £6,000 Birkin needs the date stamp, blind stamp, and authentication source on record. A vintage Chanel needs the serial card and hologram photograph. Generic software forces this into a "notes" field where it gets lost — or skipped — and buyers walk when you cannot produce the paperwork.
Like New, Excellent, Very Good, Good, Fair — every dealer uses similar grades but encodes them differently. Add corner wear, handle patina, hardware tarnish, and interior staining, and a free-text notes field cannot keep up. You end up rewriting the same description on every listing.
Box, dustbag, authentication card, original receipt, padlock, keys, clochette, rain cover. A complete set commands a premium of 15–25% over the bag alone. Knowing exactly what is included for each piece is the difference between confidently pricing high and discounting because you cannot remember.
Designer handbag dealers sell through their own Shopify store, 1stDibs, Vestiaire, Grailed, in-person at fairs (Sign Of The Times and similar), and on consignment to other dealers. Keeping a unique piece in sync across channels when every item is one-of-a-kind means constant manual updates and the genuine risk of selling something twice.
Handbag stock management software designed around the way UK designer handbag dealers actually work.
Create templates with brand, model name, year or season, serial or date code, material, hardware, exterior and interior condition, inclusions, and authentication source. Different templates for Hermès, Chanel, Louis Vuitton, or your most-traded brands — as broad or as specific as you need.
Enter your listing price once — the amount you would accept with no fees. GemJam calculates what to list at on each selling channel (Shopify, 1stDibs, in-person card sales) so you hit the same profit after fees. Configure each channel's fee structure once in settings.
GemJam tracks the VAT status of every purchase and calculates Margin Scheme VAT automatically when items sell. No manual formulas, no eligibility guesswork, no compliance gaps — essential for a stock book dominated by private-seller and consignment purchases.
List items on Shopify directly from GemJam. When a piece sells on any channel, your inventory updates everywhere automatically. eBay integration is in development. Marketplace bridging tools for 1stDibs, Vestiaire, and Grailed (Professional and above) are coming soon — bulk-export listings without retyping every piece.
PUR-2026-0042
Hatton Garden Estates · 15 Feb 2026
Subtotal
£8,250.00
VAT
£0.00
Margin Scheme
Total
£8,250.00
Line Items
Art Deco Diamond Ring, c.1925
JWL-2026-0089
£3,450.00
AvailableVictorian Pearl Brooch
JWL-2026-0090
£1,800.00
SoldCartier Tank Watch, 1970s
WCH-2026-0034
£3,000.00
AvailableMost handbag dealers sell more than one brand, and the details that matter differ from brand to brand. A Hermès Birkin needs blind stamp and craftsperson. A Chanel Classic Flap needs serial sticker and hologram. GemJam lets you create custom templates with the right fields for each category, so every piece captures the information buyers and HMRC expect.
Create a template per brand with the fields that matter — blind stamp year and craftsperson for Hermès, serial card and hologram for Chanel, date code position for Louis Vuitton. Filter your stock by hardware, material, or model when a buyer asks for something specific.
Define select-list fields for headline grades (Like New, Excellent, Very Good, Good, Fair) and separate exterior, interior, and hardware grades. Track inclusions precisely — box, dustbag, authentication card, receipt, padlock, keys, clochette, rain cover — so a "full set" piece is priced and described accurately.
Record the full serial or date code privately and use a calculated field to generate a masked version (e.g. "1234XXXX") for public listings. The full number stays in your records for authentication and insurance; counterfeiters cannot copy what you do not publish.
Attach authentication certificates, date code photos, and condition photos to each piece. Custom fields record authentication source (Entrupy, Real Authentication, in-house, brand boutique receipt), date authenticated, and grade — ready to share with sceptical buyers and to prove provenance to HMRC.
Most pre-owned designer handbag stock comes from private sellers, consignment, and non-VAT-registered sources. The VAT Margin Scheme lets you pay VAT only on the profit margin rather than the full selling price. GemJam handles this automatically.
Automatic eligibility tracking based on seller VAT status
VAT calculated at 1/6 (16.67%) of the profit margin on eligible items
HMRC-compliant Stock Book, VAT Return Report, and dual invoice formats
Export to Xero-compatible format, ready for forwarding to Dext
How purpose-built handbag dealer software compares to the alternatives.
| Feature | GemJam | Spreadsheets | Generic Inventory | Dedicated Dealer Software |
|---|---|---|---|---|
| Custom templates per brand | Yes | Manual columns | Limited | Varies |
| Authentication and serial number tracking | Yes | Manual | No | Varies |
| Condition grading and inclusions | Yes | Free text only | No | Limited |
| Channel pricing calculator | Yes | No | No | No |
| VAT Margin Scheme | Yes | Manual formulas | No | Yes |
| Multi-channel (Shopify; eBay coming soon) | Yes | No | Varies | No |
| Photo management | Yes | No | Yes | Yes |
| Unique item management | Yes | Limited | Bulk-focused | Yes |
GemJam works for any dealer of unique items — explore the dedicated landing pages for adjacent categories.
Practical answers for UK designer handbag dealers considering GemJam.
Every item links to its purchase record and the contact you bought from, so the chain of ownership is documented from the moment a piece enters your stock. You can attach authentication certificates, photos of the date code or serial number, receipts, and condition photos to each item. Custom template fields let you record the authentication source (Entrupy, Real Authentication, in-house, brand boutique receipt), date authenticated, and grade — the information sophisticated buyers expect before they part with £2,000 for a Birkin or a vintage Kelly.
Yes. Use a calculated field on your handbag template that derives a masked version (e.g. "1234XXXX") from the full serial number. The full number stays in your private records for authentication and insurance; the masked version is what you push to Shopify, 1stDibs, or share with prospective buyers. Common practice for high-value pieces where publishing the full code invites counterfeiters.
Every item in GemJam has standard fields: title, SKU, acquisition date and price, listing price, status, description, condition, location, category, HS code, and country of origin. Beyond these, you create custom templates with fields tailored to each type of stock. A designer handbag template might track brand, model, year or season, serial or date code, material, hardware (gold, silver, palladium), interior and exterior condition grades, inclusions (box, dustbag, authentication card, receipt), and authentication details. A Hermès-specific template might add blind stamp year, craftsperson, and lining. Templates can be broad (one for all handbags) or narrow (one just for Hermès Birkins) — you decide the level of detail.
Yes. Most pre-owned handbag dealers use Like New, Excellent, Very Good, Good, and Fair as headline grades, sometimes alongside finer detail (corner wear, interior staining, hardware tarnish, handle patina). GemJam lets you define select-list fields for each grade and free-text condition notes for the nuance buyers want — handle drop measurement, missing keys, lining replacement, professional refurbishment. You can also separate exterior, interior, and hardware grades so a piece with a flawless exterior but worn interior is described accurately.
Shopify integration is live — listings, photos, descriptions, and pricing push from GemJam to Shopify, and stock syncs back when a piece sells. Marketplace bridging tools for 1stDibs, Vestiaire, and Grailed are coming soon on Professional and above, so you can bulk-export listings without retyping every piece. In-person consignment, fairs (Sign Of The Times, Frieze, regional), and card sales are tracked through GemJam itself with sales channel labels you define. eBay integration is also in development.
Most pre-owned designer handbags come from private sellers or consignment, so they qualify for the VAT Margin Scheme. GemJam tracks the VAT status of every purchase automatically. When you buy from a private individual or a non-VAT-registered seller, the item is flagged as Margin Scheme eligible. When sold, GemJam calculates VAT at 1/6 (16.67%) of the profit margin rather than the full selling price. It generates HMRC-compliant Stock Book entries, VAT Return Reports, and dual invoice formats — and exports to Xero-compatible format, ready for forwarding to Dext.
Yes. You can import items from Shopify, upload a spreadsheet (CSV or Excel), or add items individually. Each piece gets its own record with photos, purchase history, and your custom template fields. Most dealers are up and running within a day.
Generic inventory systems assume interchangeable units with fixed prices — they are built for warehouses and retail, not dealers of unique pieces where each Birkin, Kelly, or Chanel Classic Flap has its own provenance, condition, and margin. GemJam treats every handbag as one-of-a-kind. You create custom templates with the fields that matter for each category — brand, model, serial, condition grades, inclusions, authentication. GemJam calculates what to list each item at on every selling channel so you hit your target profit after fees. It handles VAT Margin Scheme calculations natively, pushes listings to Shopify (eBay and marketplace bridging coming soon), tracks individual item profitability, and generates HMRC-compliant documentation. Built by a former UK dealer who understands the specific challenges.
GemJam is designer handbag dealer software that tracks authentication, condition, inclusions, and margins while keeping you HMRC-compliant. Join the waiting list for early access.