One of the premier trainers in the Chicagoland area who was into competitive bodyuilding in the 80s says a typical stack back then would run a guy between 8 and 10 grand for contest prep. If you bring that up to today where we have HGh, IGF and some others going around that weren't really used big back then, and better anti-E's, I can definately imagine that one could go for 30k over the course of 4-6 months.
However something that always gets me is the time they must take to do this. If your doing 1,000mg a day of Test, winstrol, tren, and who knows what else... your talking 3-5 shots per day. Thats as much time as a workout, and ti's gotta be tough at times for them to get through the injections pains that can happen