I never see Double Drivers in stores anymore, just going for anywhere between 8,000 and 10,000 yen+ online, and they still get snapped up instantly. It's a pretty expensive belt already so I guess that increase isn't so bad if you really want it, but I'd have trouble paying over a hundred bucks for a new DX toy, which are usually the sort of thing that you can get for huge discounts later on (i.e., Kiva.) Though speaking of that, with Kiva at least you could buy the stuff the whole time the show was on, then the prices came down as they cleared it out for Decade stuff. It feels almost like they only made so much Double stuff, then stopped. You can't buy the belt directly from Amazon anymore, last I checked. Is Double that popular? It doesn't really feel like it to me, but who knows.