Toy shops or card shops, supermarkets and grocery stores, and online e-commerce platforms.

1. Toy shops or card shops: These shops will sell all kinds of card games and related products.

2. Supermarkets and grocery stores: These places also sell Altman toys or cards.

3. Online e-commerce platforms: for example, Taobao, JD.COM, etc. On these platforms, you can find many shops selling Altman cards through search.