Marine Depot doesn't sell this Deep Blue Professional tank, Tmuck44. There is a Mr. Aqua version, however.
Allpet.com is an option many have had good luck with.
You won't find them at big box stores like that. DBP is a brand that is typically sold through smaller retailers. Since you're in/near Indy, you should call around to some of the various shops. I purchased two of mine at a small shop in Indiana and one at a store (larger, can't remember the name) in Indianapolis. Any store that carries DBP should be able to order one for you.
As somewhatshocked said, you only see Deep Blue Professional (and Mr. Aqua for that matter) at aquarium specific shops. Most people tend to buy them from online retailers on the board. Sure you figured this out but just reiterating.