Yeah, I'd really like to buy one though people are scalping the things like crazy. I saw one go for $600 on ebay (way too much). For $120, I'd gladly pick one up if I had the cash on hand at the time.
It's a shame that nobody else is making them. I don't know why the dude doesn't just license his code to someone else if he's so backed up with orders. The NES patent is no longer active, so there are all kinds of people manufacturing various NES things (USB NES controllers, etc)
Wayfar is the guy who made them and the site has basically delinked the "buy me" link.