there used to be this site around called bc seeds, and they had some beans that were like $5k for i think it was like 5 beans, the most retarded thing i've ever seen, and the worst part is that people actually ordered that crap, believe it or not...
thankfully, they were found to be the scammers they are and i do believe the sites no longer up and running..
there was a store selling bud for $80 a gram. And currently Doggies Nuts Armageddon x Sirius Skunk Feminized is $770.00 for a 10 pack. I'm sure if you came up with a proven green crack or blue dream regular seed, like a dozen or so, you could easily get a couple grand a piece from breeders in Holland.
when Co first got its medical my freind was working for one of the big dispanserys he gave me a call and said the owner was buying every strain he could get a hold of anyway long story short i sold 1 northenlights x big bud clone for 3grand after my meeting my freind told me i could have gotten 5gs for it ..but i was so happy with three i really didnt care that store now has like 200 deffernt types crazy world we live in