A Reseller’s Step-by-Step Guide to Buying Pokémon Card Collections

To run a TCG business, you need a steady stream of inventory. Buying collections is a great way to get it, but it's easy to overpay if you don't have a system. This is the process I use to evaluate lots, calculate my max bid, and win auctions without destroying my profit margins.

Initial Assessment: Condition and Seller Trust

Before you even think about price, do a quick check on the auction listing itself. The first thing is card condition. The seller in this example provided photos of the front and back of the cards, which is a huge plus. You can look for whitening on the edges and corners.

The cards in the video looked near mint, but probably not in gradable condition. That's fine for selling as raw singles. Also, check the seller's feedback. A 100% rating is always a good sign that you're dealing with someone reliable.

Calculating the Lot's Total Market Value

The most important step is calculating the total current market value (CMV) of all the cards in the lot. This is your baseline. I use a simple notes app on a second screen to add up the values as I look them up.

Where to Find Prices

For pricing, I use Cardmarket since I'm in Europe. If you're in the US, you'd use TCGplayer. The principle is the same. Look up each card and find its recent sales data.

I typically look at the price trend and the 30-day average, then use the lower of the two for my calculation. This gives a more conservative and realistic valuation, as some high sales could be for graded cards, which skews the average up.

Tips for Faster Lookups

To save time, search by the card number and set name instead of typing the full Pokémon name. For example, searching for 'Cosmic Eclipse 225' is much faster than 'Pikachu Cosmic Eclipse Secret Rare'.

If I can see the number, I will choose the number because it's way quicker.

Determining Your Maximum Bid

Once you have the total market value, you need to decide what percentage of that you're willing to pay. This number is your maximum bid. It's your cost of goods, and it directly impacts your final profit.

The 70% Rule of Thumb

As a general rule, I aim to pay around 70% of the calculated market value. This leaves enough room to cover platform fees, shipping supplies, and my own profit margin after the cards are sold.

• For lots with more valuable cards (e.g., several cards over $20), I might be willing to go up to 75%.
• If a lot contains mostly low-value bulk, I'll stick closer to 70% or even aim lower.
• Ultimately, this percentage depends on your own business. You have to know your cost structure and what margin you need to hit.

Bidding Strategy: It Depends on the Platform

How you place your bid is just as important as the bid amount. The best strategy changes depending on the auction site's rules. I use an alarm on my phone set for 5 minutes before an auction ends so I don't miss it.

Timer-Reset Auctions (like Ricardo)

The auction in the video was on Ricardo, a Swiss platform where a last-minute bid resets the auction timer. For these types of auctions, there's no benefit to waiting until the last second. I place my bid when there are a few minutes left and see if anyone else is willing to go higher.

Sniping on eBay

On eBay, the auction ends at a fixed time. The best strategy here is 'sniping.' You wait until the final seconds of the auction, place your single maximum bid with about 2-3 seconds left, and click. This gives other bidders no time to react and place a counter-bid.

Handling Larger Lots with Bulk Cards

For large collections, looking up every single card isn't efficient. You need a system for estimating the value of the low-end cards.

I have mental shortcuts. For most modern regular V cards, I'll just calculate them at $1 each. For a VMAX, maybe $2. You still need to spot-check the cards that tend to hold more value (like a Rayquaza or an Eeveelution), but assigning a flat rate to the common hits saves a huge amount of time.

Post-Win Processing: From Mailbox to Listing

In the live example, I won the lot of nine cards for 93 francs. After adding 4 for shipping, the total cost was 97. My initial CMV calculation was 157, so I acquired the lot for about 62% of market value—a good result.

Once the cards arrive, the first step is to inspect them and verify the condition matches the listing. From there, I sort them. Any cards with perfect centering and surfaces get put in a stack to consider for PSA grading. The rest go into my main inventory to be scanned, priced, and listed for sale.

A Repeatable System is Key

Buying collections isn't about getting lucky. It's about having a consistent, repeatable process. By checking condition, calculating value accurately, setting a max bid based on your margins, and using the right bidding strategy, you can reliably acquire inventory that will make you money. Sometimes you win the auction, sometimes the price goes too high and you walk away. That's the discipline.