I picked up a GB micro for a sweet 34.99 at Toys R Us in Times Square. There seemed to be plenty on the shelf this Tuesday evening.
Not sure if people know about this, did a search and found nada.
Really tempting... do you remember what colors they had?
Also, can these be used for multiplayer games on Gamecube that require everyone to use Game Boy Advances? Legend of Zelda: Four Swords, Final Fantasy: Crystal Chronicles... I think that's it.