It's not really my thing, but I thought some Famiclone collectors might be interested. Buy.com has the Retro Duo Twin system for $29.99 shipped. They're a reputable site (I buy stuff from them on occasion).
http://www.buy.com/prod/retro-duo-twin-nes-and-snes-console-red-black/q/loc/108/209297335.html (http://www.buy.com/prod/retro-duo-twin-nes-and-snes-console-red-black/q/loc/108/209297335.html)
It just sucks because I read a review and it said that this unit does not work with the famicom disk system.
I'm sure it probably doesn't...it plays NES games, so you need a converter, and usually converters screw up the "signal" the RAM adapter is trying to send, so it doesn't come out right, and gets a scrambled picture or inverted colors.
I've been using a Retro Duo since I joined this site. In fact, it was one of the reasons I started collecting Famicom and SFC games.
I've discovered some negatives to the Retro Duo.
1. Not all pirates work on it
2. There are noticable lines where the screen is rolling.
3. Some SFC and SNES games might cause the Retro Duo to freeze and reset to a blank screen
Still, its got a good bang for your buck.
More info:
http://www.digitpress.com/forum/showthread.php?t=114088 (http://www.digitpress.com/forum/showthread.php?t=114088)
Works with Castlevania 3, which most NAOCs will fail to do. Also works with the PowerPak.