Honestly, personally I've only eaten pork steaks about 6 or 8 times in my life. They were delicious and I/we never had nor used any BBQ sauce... It's like asking; how much BBQ sauce on a beef steak, IMHO.
Probably want about 30 bottles of a mixture of different sauces, from A-1, Heinz 57, perhaps a few with BBQ sauce in 'em...
Hance - Lake Dogs Cooking Team - MiM/MBN/GBA CBJ and comp cook
Lake Sinclair, GA (strategically about an hour from everywhere)