Apps like Shiny and Collectr can make this more confusing. They typically show the market value of your collection, not the actual amount you would receive after selling fees, shipping, taxes, and time costs. A card marked at $100 in an app might only net you $80—or less—after real-world expenses. These apps are useful for tracking value movements, but they don’t calculate real profit, and relying on them alone can give you a false sense of your portfolio’s worth.
You also have to consider liquidity . TCG items aren’t like stocks that can be sold instantly with a single click. High-value cards usually require good photos, detailed listings, and time spent posting on eBay, TCGplayer, or social platforms. And if you try to avoid fees by selling on Facebook Marketplace, Discord, or local meetups, you often end up spending hours negotiating or dealing with lowball offers—time that eats into your actual return. Illiquid items can be profitable on paper but slow or painful to move in reality.
Marketplaces like eBay and TCGplayer offer the easiest, safest way to sell, but that convenience comes at a cost—usually around 15% in selling fees . That doesn’t include the shipping cost , packing materials, or the time spent fulfilling the sale. These fees dramatically reduce the real profit on each transaction, and many collectors don’t factor them into their calculations.
And then there’s the cost of buying . A $100 card doesn’t really cost $100. With roughly 9% sales tax on most online purchases and occasional shipping fees, that same card often ends up costing you $109 out the door. If you later sell that card for $100 market value, subtract $5 to ship it and another $15 in selling fees—you’re left with roughly $80 . That’s a $29 loss . To break even on that original $100 purchase, you’d need to sell it for closer to $135 , not $100. This is why your purchase price is one of the most important factors in TCG investing.
If you keep all these factors in mind, you’ll make smarter, more realistic financial decisions in the TCG space. Even a card that rises 50% in market price may not generate true profit after all costs are accounted for. The best approach is a long-term outlook , careful buy-ins, and patience. Treating your hobby like an investment—while still enjoying the fun of collecting—will help you avoid hidden losses and make decisions that actually grow your collection’s value over time.