$400 big ones, $400 tuna?! For deep diver?! Tropo forte, no? Advanced Courses are supposed to slip most of this stuff in, and good luck renting a drysuit you don’t have "Drysuit Diver" stamped on you somewhere. I wouldn’t rent out one of my drysuits to someone unless I saw "Drysuit" diver stamped on his/her head somewhere - no way.