Collector Store – Shop in St. Louis with great prices and a low free shipping threshold.
Trading Card Market – Another shop in St. Louis with a limited selection but great prices, BNPL, very low free shipping threshold and $10 off with newsletter signup.
GP Sports Cards – Canadian group breaker. They seem to have to most options if you want to buy into a group break and probably the easiest option for Americans wanting to join a Canadian group break. I have used them and recommend them.
Hockey in Alabama – Friend of the site and a hockey card breaker based in Alabama.
Collx – Smartphone app that allows you to inventory your cards by taking their picture, also has their own marketplace. No need to invest in a card scanner to easily inventory your cards or to sell them online.
Hockey Card Gongshow – An American-based podcast covering hockey card collecting.