so are people just buying gold from those websites that gets advertised on area chat and selling it on jsp at higher ratio?

no idea, but ratio dropping fast

Pretty common here now days...I am positive this was happening during d2r.

I'm also guessing some of them are the same people (sell for $$ elsewhere, fg here). This is just another market, and one that usually doesn't RMT from other places I'd guess, so it opens a lot of sales for them I'm sure.