If you have a TV and dont want to play games on the go then buy a SNES for less than £5 from ebay or your local 2nd hand console shop (my mate picked up an N64 + 2 pads for £4 from a 2nd hand shop). Mario Kart, F-Zero, Street Fighter, Castlevania, Mario, Bomberman, etc. all games for the GBA that are on the SNES and SNES games wont cost you £30 (more like £2 - £5 ).
I have a GBA and thier great for on the go but there is no way I would pay that price to play it on a TV
almost $80 for a TV adapter that's obscene! Americans can get a Dreamcast + games for about that cant they???