I've ordered from all of the above minus Derium's(partially hence the asterisk) and have had great experiences. TCGPlayer, TrollandToad and eBay are also very valid options, just stick to reputable sellers where applicable. A booster pack contains 10 random cards, similar to a pack of baseball cards. The primary way players collect these cards is through booster packs. Our wholesale prices are competitive, and we offer bulk discounts for large orders. We offer a wide range of Pokemon TCG products, including booster packs, theme decks, elite trainer boxes, tins, and more. Me personally, below are my recommendations. The Pokemon TCG is a trading card game, meaning players collect cards to build unique decks and play against each other. Plus Marketing is a leading wholesale distributor of Pokemon Trading Cards in the UK and Europe. Sounds like you may be talking about one of the one's I'd normally recommend(I'll still list them below), and I've not heard a particular response from the company regarding what's going on, but there's been a handful of posts recently regarding that if so.