Quick note before the ranking: this isn't a guide to scoring new-release booster boxes at MSRP before Target or the Pokémon Center sells out. That's a different problem, mostly about restock timing and queues. This is about where to consistently find good deals and trustworthy sellers once you're actually collecting, not just chasing a single drop.
Most guides rank places to buy Pokémon cards by price efficiency. Whoever's cheapest wins. That's not how I rank it, and it's not actually why the good deals happen. The ranking below is based on relationship strength, not price. The closer you get to an actual person who wants to deal with you again, the better every future transaction gets, on both the buying and selling side.
1. Facebook Marketplace
This is the top of the list, and it's counterintuitive, because it's genuinely harder to find good sellers on Marketplace than anywhere else. There's no storefront reputation, no vetting, no reviews to lean on. You have to do the work of figuring out who's legit, and yes, that means being careful about meeting in safe public places and confirming what you're actually getting before you hand over cash.
But that work pays off more than anywhere else on this list. The people you find on Marketplace who are genuinely good to deal with become repeat sellers, and repeat relationships are where the actual deals live. There's no store overhead baked into the price either, since it's usually person to person. It's slower to get started here. It's the best channel once you have.
2. Card shows
Card shows are the in-person version of the same logic. You're standing in front of a vendor, you can build rapport over a few conversations, and vendors who recognize you as a regular start treating you differently than a one-time walk-up buyer. This is also where a lot of the real education happens: talking through grading, talking through what's moving, comparing notes with people who are as into this as you are.
If you're going to your first show, don't expect to walk out with the deal of the century on visit one. It takes multiple visits to get the benefit. The first time you show up, you're a stranger. By the third or fourth, you're someone they remember.
3. Local game stores
LGS is a fine place to shop, and a genuinely good place to build early relationships in the hobby if there's a shop near you that feels right. But go in with clear eyes about the incentive: the store's business is the store's bottom line. That's not a knock on any specific shop. It's just the structural reality, and it means the relationship has a ceiling that Marketplace and card shows don't.
4. TCGPlayer / eBay, last resort
These are the most convenient and the least personal. On TCGPlayer and eBay, you're buying from someone whose incentive is to get the most money out of this one transaction, full stop. There's no repeat relationship building the deal for you. That doesn't make these platforms bad. Sometimes you need something specific and this is the only place to find it. It just means treat them as a last resort, not a starting point.
Worth saying plainly: this cuts both ways. When I'm the one selling on eBay, I'm also just trying to get top dollar. That's the nature of the platform, not a moral failing on either side of the transaction.
Why the ranking isn't about ease
None of this is the "easiest way to find deals" list. It's actually closer to the opposite. The top of the list takes the most work to get right. What you're building isn't today's transaction. It's a version of this hobby where next month's transaction is easier than this month's, because someone on the other end already knows you.
That compounding is the entire point of ranking it this way instead of by price.