I think most of sponsors would qualify. Great deals can be had at Bluse Sierra, Saltwater City, and Below Sea Level.
Not sure if that is what you had in mind, but I would have a hard time recommending someone go anywhere else. These places have great selection and prices.
The Shark Reef has excellent sales & beautiful stuff. I buy most of my stuff there & even with the ferry ride you still save. He always has a huge selection too!