I got mine from eBay about 3-4 years ago, already nicely AV modded, from a seller in Japan (and I'll be hanged if I can remember what his name was now...). So...obviously that wasn't a money order purchase.
I'd just make double-triple-quadruple-and-whatever-the-heck-comes-after-quadruple sure that, for that price, you're getting a genuine Famicom and not some kind of Famiclone. Mine was about $65 shipped, and it even came with the original comic book and everything.