The True Cost of Buying and Selling Sports Cards

If you plan to buy and sell sports cards for profit, one of the biggest mistakes you can make is only looking at the sticker price of a card. Successful sellers understand that margins are won—or lost—by accounting for every cost on both the buy and sell side.

Let’s break it down.

What to Consider When Buying a Card

Before you ever click “Buy It Now,” you should be asking a few key questions:

• What are the most recent comps for this card?

• How many copies are currently listed, and at what prices?

• What condition are those cards compared to the one you’re targeting?

• What have similar cards actually sold for—not just what sellers are asking?

Just as important: the purchase price of the card is not your total cost.

Total Acquisition Cost Matters

When buying online, you’ll almost always need to factor in:

• Sales tax

• Shipping costs

For example, a card listed at $25.00 might look like a good deal—until you add:

• $1.82 in sales tax

• $5.30 in shipping

That brings your true acquisition cost to $32.12.

If you’re working with thin margins (as most card sellers are), ignoring these costs can quickly turn a “win” into a loss.

What to Consider When Selling a Card

Where you sell the card matters just as much as what you paid for it.

If you sell on platforms like eBay, you’ll typically face:

• Transaction fees

• Optional (but often necessary) promotion/ad fees

• Sales tax collected and remitted by the platform

While buyers usually pay for shipping, sellers still incur real shipping expenses, including:

• Bubble mailers and packaging materials

• Labels, tape, and supplies

• Mileage and time spent dropping packages at USPS

These costs add up—and they come directly out of your profit.

Real-World Example: A $25 Card Sale

Below is a real transaction from a card we sold:

Buyer Side

• Card price: $25.00

• Shipping: $5.30

• Sales tax: $1.82

• Total paid by buyer: $32.12

Seller Side (Our Earnings)

• Total received: $32.12

• Sales tax paid: −$1.82

• eBay transaction fee: −$4.66

• eBay ad fee: −$3.53

Net earnings after platform fees: $22.11

Fulfillment Costs

• Shipping cost: −$4.45

• Bubble mailer: −$0.25

• Mileage: −$3.00

Final profit: $14.41

That’s only 57% of the original $25 sale price.

The Big Takeaway

When buying cards with the intent to resell, you must ask:

• Am I buying below comp enough to still profit after all costs?

• Is the card liquid enough to sell quickly at market value?

• Can I reduce fees by selling outside of eBay?

Selling through alternatives like:

• Your own website

• Local card shops

• Card shows

• Facebook Marketplace or direct deals

can significantly improve margins by eliminating platform fees.

Final Thoughts

Buying and selling sports cards isn’t just about finding good cards—it’s about understanding the math behind every transaction. The sellers who last long-term are the ones who know their numbers before they buy.

Profit isn’t made at checkout. It’s made in the planning. 💡