eBay vs. COMC vs. Whatnot: Comparing Seller Fees

If you sell sports cards regularly, the platform you choose can move your net profit by a meaningful amount even on identical cards sold for identical prices. eBay, COMC, and Whatnot each charge sellers in a different way, and each one is built around a different selling motion: eBay is a listed marketplace, COMC is a consignment-style warehouse, and Whatnot is live auction selling through video. Understanding how their fee structures actually work, not just the headline percentage, is the difference between guessing at your margins and knowing them.

How eBay Fees Work

eBay charges sellers a final value fee that is calculated as a percentage of the total sale price, which typically includes the item price plus whatever you charged for shipping. For trading cards, that percentage has historically landed somewhere in the low-to-mid teens as a ballpark, though eBay has run category-specific rates and occasional promotions, so you should always check the current published rate rather than assume a fixed number. On top of the final value fee, eBay deducts a small per-order fee on many transactions, and if you use promoted listings to boost visibility, that adds another percentage-based cost on top of everything else.

The practical effect is that your eBay payout is noticeably lower than your sale price once you stack the final value fee, any promoted listing spend, and your own shipping and supply costs. Many sellers underestimate this because PayPal and eBay used to show fees more transparently in separate line items; now that eBay manages payments directly, the deduction happens in one lump sum that can be easy to overlook when you're pricing a card. Running your eBay numbers through our Compare Fees Calculator before you list is the simplest way to see your real take-home instead of estimating it in your head.

Shipping and Supplies on eBay

Because eBay fees are typically calculated on the full sale amount including shipping, inflating your shipping charge to lower your "item price" doesn't actually save you money the way some sellers assume — you still pay the percentage on the combined total. Your real controllable costs are the physical supplies: sleeves, semi-rigid holders, bubble mailers, and tracked postage, all of which eat into margin on lower-value cards faster than people expect.

How COMC Fees Work

COMC operates as a consignment marketplace: you ship your cards to their warehouse, they photograph and list them, and buyers purchase directly from COMC's inventory system without you touching the item again. In exchange for that convenience, COMC charges processing fees when cards arrive, and then a final sale fee as a percentage when a card sells, with the percentage often scaling based on the sale price tier — cheaper cards can carry a higher relative fee than expensive ones, as a rough rule of thumb.

COMC's model trades a lower per-sale hassle for a longer holding period and a different fee shape. You're not paying for your own photography, listing time, or individual shipping on every sale, which matters a lot if you're moving a large volume of mid-value cards. But payouts take a predictable wait, and COMC credit versus cash withdrawal can carry different effective values, so it's worth factoring that into your break-even thinking rather than just comparing raw fee percentages.

When COMC Makes Sense

COMC tends to make the most sense for sellers with a large back catalog of cards they don't want to individually photograph and list, especially cards in the lower-to-mid price range where the time savings outweighs the fee structure. It's less ideal for a single high-value card where you'd rather control the listing, pricing, and negotiation directly.

How Whatnot Fees Work

Whatnot charges sellers a commission on the final sale price of each item sold during a live show, plus a separate payment processing fee layered on top, as a ballpark combined rate. Unlike eBay or COMC, Whatnot's selling motion is built around live auctions and buy-it-now drops happening in real time during a streamed show, so the fee structure needs to be thought of alongside the time cost of actually running a show — sourcing cards, building a show order, engaging with chat, and shipping out dozens of small packages afterward.

Whatnot can produce strong per-card prices because live auction dynamics and bidding energy sometimes push prices above a static listing price, particularly for cards with built-in hype. But the commission plus payment processing combination means your take-home percentage is comparable to or sometimes higher than eBay's, and the labor of running a show is real and should be priced into your time.

Comparing the Three Side by Side

Fee Structure Summary

• eBay: percentage-based final value fee on total sale price, plus optional promoted listing costs, paid per individual listing you create and manage yourself.
• COMC: processing fee on intake plus a tiered final sale fee, paid in exchange for COMC handling photography, listing, and shipping on your behalf.
• Whatnot: commission plus payment processing on each live sale, paid in exchange for real-time auction dynamics and a built-in buyer audience during shows.

Speed to Cash

eBay payouts land relatively quickly once a sale and shipment are confirmed. Whatnot payouts also tend to move fairly fast after a show closes. COMC, by contrast, is built for sellers comfortable with inventory sitting and selling gradually over weeks or months, with payout timing tied to COMC's own schedule.

Labor Required

eBay requires you to photograph, list, price, and ship every card yourself. COMC requires you to ship a batch to their warehouse and then largely step back. Whatnot requires you to prepare a show, perform it live, and then ship everything that sold afterward — arguably the most hands-on of the three, even though the selling itself happens quickly.

Bottom Line

No single platform wins across every card and every seller. eBay gives you the most control and the broadest buyer base but comes with full listing labor and a meaningful final value fee. COMC trades fee percentage and payout speed for a hands-off, scalable listing process well suited to bulk mid-value inventory. Whatnot trades commission and real-time effort for the chance at hype-driven prices and a built-in community of buyers watching live. The right move for most sellers is running the same card's projected sale price through all three fee structures before deciding where to list, which is exactly what our Compare Fees Calculator is built to do quickly.