I used "Bay Country Crabbing Supply" for my trotline and have been happy with it. They sell pots too. Don't forget to make sure whatever you use that it has the proper by-catch devices. (maybe the all do I just don't know).
Use a guy named Spalding. He is South of Calloway. They were $29 last batch. He has rubber coated or galvanized mesh with two door configurations. He makes them himself. There is a crappy plywood sign along the highway. It's on the west side of the road. It's a bit off the road. His black lab is kind of barky.