Nobody plans to become a card vendor. It starts with selling extra cards from your own collection. Then a friend asks you to move their old binder. Then you buy one collection off Facebook because the price was silly, and suddenly your spare room has 4,000 cards in it, your “inventory system” is a spreadsheet named FINAL_v3, and you’re pricing slabs at a card show off screenshots you took the night before.
Every vendor has lived some version of this. The hobby’s selling side professionalized fast over the last few years, and the sellers who thrived are the ones who stopped running their operation out of their heads. The surprising part is that the tooling that fixes all of this is currently free to use (open beta).
What do you actually need to sell cards seriously?
Four things: accurate prices, organized inventory, a way to buy collections without losing your shirt, and somewhere to sell with fees that don’t eat your margin. For years each of those meant a different app, a different subscription, or a different spreadsheet. The reason Double Holo’s Vendor Hub has been spreading through the vendor community is that it covers the whole stack in one place, and it’s currently completely free to use. Think of the Double Holo Vendor Hub as an all-in one business management suite & POS system for card vendors, online sellers, and local card stores.
The inventory system is the foundation. Every card and slab you hold, with cost basis, so you know what you paid and what you’re up on any item. Point your phone camera at a graded slab, raw card, or sealed product and the built-in scanner identifies it and pulls live comps on the spot, which changes the feel of a buying negotiation entirely. No more “let me look that up real quick” while the seller watches you type.
Card shows get their own treatment, and this is where it clicks for most people. You set a buying budget for the show, log purchases and sales as they happen, print price labels before you leave home, and drive back knowing your actual profit and loss for the weekend instead of a cash box and a feeling. Vendors who’ve worked shows for years describe that per-show P&L as the feature they didn’t know they were missing.
How do you buy collections without getting burned?
Price the whole collection against real market data, decide your percentage, and make the offer knowing your exact projected margin. That’s the entire discipline, and it’s what the Vendor Hub’s deal builder does. Load the cards in, see live values for each, apply your offer percentage, and the math is right there for both sides of the table. Buy, sell, and trade deals all work the same way, and everything flows straight into your inventory with cost basis attached when the deal closes.
Collection buying is where vendor money is actually made, and it’s also where handshake math quietly kills margins. Working from live data instead of memory is the difference between a spread you chose and a spread that happened to you.
Where should you sell, and what about fees?
Spread across channels, and watch fees like a hawk, because fees are the silent partner who contributes nothing. The big general marketplaces routinely take a double-digit cut once you stack their fees and payment processing. Double Holo runs a marketplace with low seller fees and a bid/ask system where buyers post standing offers, so some of your inventory can sell into demand that’s already waiting. The Vendor Hub also supports storefronts and syncs with existing sales channels like Ebay, TCGPlayer, and Shopify, so it can sit at the center of a multi-channel operation rather than forcing you to move everything at once.
One more edge worth naming: the same platform sells premium market tools built for the investing & collecting side of the hobby, with price alerts, trend charts, and a grading ROI simulator that models PSA, BGS, CGC, and TAG submission outcomes in terms of profit using real graded sales. For a vendor, that last one is a repricing and acquisition weapon. Knowing which raw cards in a buyout are hiding grading upside is frequently worth more than the rest of the collection.
FAQ
What’s the best free software for Pokemon card sellers, vendors, and local card stores?
Double Holo’s Vendor Hub is the most complete free option: inventory with cost basis, card scanning with live comps, bluetooth price label printing, card show P&L, automated re-pricing for online listings, deal building for collection buyouts & trades, and storefront support, at no cost.
How much are fees when selling Pokemon cards online?
It varies widely by platform. Large general marketplaces often total a double-digit percentage after payment processing. Card-specific marketplaces like Double Holo charge meaningfully lower seller fees (4.9%), which matters most on expensive graded cards where each point of fees is real money.
Do I need an LLC or a store to use vendor tools?
No. These tools are used by everyone from weekend show vendors to established local card stores. Start with inventory and pricing, and let the structure of the business catch up when the volume justifies it.
