http://www.ndscardsale.com/fc-home-game-cartridge
Deal Extreme's sister/baby site put up a bunch of Famicom multicarts this week.
*edit* They even look to have "dust sleeves"! I've never seen that on a HK multicart!
IMO It's tough to beat that price with free shipping ... for the oddball Fami multicart collector like myself I figured I'd share. It's not often that these sites stock up on this kind of thing these days (even the OneStation type games are few/far between lately).
I have no clue what's on the multi game carts that have more than 4 games but I ordered one of each. I'll report back with game lists when I get them if anybody is interested.
With the "standards" that you find on a FC 100 in 1 (Tengen Tetris, Vs. Goonies, SMB, etc.) $3 seems like a good deal to me.