It depends on where in the world you live., I have a mate who lives in Australia who says that people look on in bemusement when you ask about crystal MDMA, and he met one person who said they'd seen it once for AUS$300+ per gram. But if you live in Europe or North America, OP, it shouldn't be too hard to find.
On an aside, I was once given a rock of MDMA that must have weighed a gram for free by someone who'd found two stashed in a club :D