GAP ties your back-office to ATG's marketplace ecosystem. Your data, your buyers, your brand — all locked inside their platform. Sablot gives you a modern auction management system that's entirely yours. One flat fee, no marketplace dependency, live in a week.
GAP is part of Auction Technology Group — the same company that owns The Saleroom, LiveAuctioneers, and BidSpotter. That means your back-office is tied to their marketplace. Here's what that costs you.
Your marketing effort drives bidders to ATG's marketplaces. Your buyers become their buyers. After months of doing the legwork, you've grown someone else's platform — not your own business.
ATG's pricing isn't published — you have to ask for a quote. Per-lot charges, commission percentages, and add-on fees mean your costs scale unpredictably. No transparency, no clarity on true cost.
Auctioneers report they can't get basic analytics about their own buyers. Pulling reports is difficult. Making strategic decisions based on intuition because the data is locked inside ATG's ecosystem.
GAP credentials are tied to ATG marketplaces. Integration issues mean paddle numbers, bidder data, and results don't always sync cleanly. Leaving means rebuilding from scratch — so you stay.
Staff entering the same data multiple times across disconnected systems. Settlement takes days instead of hours. When buyers call about an invoice, your team hunts through multiple platforms to find answers.
You're one of thousands of auction houses on a corporate platform. No assigned consultant. No hands-on onboarding. Support tickets, not people who know your business.
| Feature | GAP Office | Sablot |
|---|---|---|
| Deployment model | Cloud — tied to ATG ecosystem | Cloud — fully independent |
| Own your buyer data | Shared with ATG marketplaces | 100% yours |
| Transparent pricing | No — quote required | Published on website |
| Setup time | Weeks/months | One week |
| Data migration | Your problem | We handle it |
| Staff onboarding | Self-serve documentation | Hands-on training with your consultant |
| Dedicated consultant | No | Yes, included |
| Marketplace integrations | ATG platforms only (The Saleroom, LiveAuctioneers, BidSpotter) | All major platforms — without lock-in |
| AI catalogue descriptions | No | Professional standard |
| Payment links in invoices | No | Stripe integration |
| Automated payment reminders | No | Yes |
| Consignor settlements | Manual calculation | Automated |
| Pricing model | Custom quotes, commissions, per-lot fees | Flat monthly fee, no hidden charges |
| Cost predictability | Costs rise as your auction volume grows | Same price whether you sell 50 or 5,000 lots |
| Independent from marketplace | No — back-office is the marketplace | Yes — your software, your data, your terms |
| Support response time | 24-48 hours | 2-4 hours |
We're not going to pretend everything about GAP is terrible. ATG is a London Stock Exchange-listed company powering billions in annual auction sales. Here's where they're strong — and where we're different.
ATG operates the largest auction marketplace network in the world — The Saleroom, LiveAuctioneers, BidSpotter, and more. If marketplace reach is your primary concern, that network is genuinely hard to match. They've processed billions in bids and have deep enterprise relationships.
If you want to own your brand, your buyer relationships, and your data — without paying escalating marketplace commissions — that's where we come in. Flat pricing, a dedicated consultant who knows your business, and a modern back-office that doesn't tie you to one ecosystem.
The right choice depends on your priorities. If you're happy building within ATG's ecosystem, GAP works. If you want independence, predictable costs, and a team that treats you as a partner — book a call and we'll show you the difference.
It's not just software. It's a full package.
You get a person assigned to your house—not a chatbot or ticketing queue. Someone who understands your workflow and your business.
We configure your workspace, train your team, migrate your data, and handle go-live. You're not left figuring it out alone.
Moving from GAP Office? We export your data, import it into Sablot, test everything, and verify accuracy. No lost records, no manual re-entry.
Feature questions, workflow help, data exports—all included. No tier-based support or surprise support costs.
Designed for fine art, antiques, jewellery, collectibles, and furniture auctioneers. We speak your language and understand your lots.
Enterprise-grade UK hosting, encryption at rest and in transit, automated backups, and full GDPR compliance. Your data is secure.
Specialist auction houses who know their lots and need software that gets out of the way.
Auction houses dealing in paintings, sculpture, prints, and contemporary art. Cataloguing and settlement workflows that make sense.
From furniture and jewellery to watches, books, and rare items. Specialist terminology built in, AI descriptions trained for your category.
High-value lots, complex descriptions, international buyers. Consignor settlements, buyer invoicing, debtor management all handled.
Not property. Not cars. Not procurement. Sablot is built for auction houses that know what they're selling and need software designed specifically for specialist auctioneers.
No per-lot fees. No percentage of hammer. No hidden charges. Just honest monthly pricing.
See why specialist auction houses choose Sablot. Live in a week. Dedicated support from day one.
Book a 15-minute demo