@FiveDigitLP Usually around $50US if they turn up at Best Buy. KH Sora was a recent release that went for $50, for example, but also was marked down occasionally during sales. Sometimes higher if you see one at a comics/collectibles store, and always higher if found in a Japanese specialty shop like Kinokuniya Books (because Kinokuniya usually charges more than the going rate in Yen).

I find Tokyo Otaku Mode has reasonable prices (an online shop; all one word, just add a .com at the end), much closer to the originals since they're supposed to start at around $30-$40 for the standard ones. They're also an official distributor for GoodSmile, they even allow preorders and carry the reprints if available. The downside, try to place an order with other things to build up to the free shipping offer since most of their items ship straight from their warehouses in Japan, it's going to be expensive! At the very least we know they're legit and you won't get swindled with a knockoff. (I see those from time to time at conventions)