xbox mod chips help

[goldenegg]

i know ill get ripped off if i buy roms, but thats only a bonus, the xbox comes with about 70 games already downloaded on to it, with a disc w/ movies, tv shows, etc, and every game for

Nintendo Entertainment System (NES)
Super Nintendo (SNES)
Sega Master System
Gameboy
Sega Genesis
Game Gear
Gameboy Color
Gameboy Advanced
N64 ( a few games right now)
even old old systems: Atari 2600, Atari 5200, Atari Lynx, Colecovision, Intellivision, MSX, MSX2, MSX2+, Turbografx 16, Neo Geo Pocket, and WonderSwan

and he updates it for you, and it comes with a whole bunch of extras

and its $365, do any of you think its worth it?

and if im not mistaked, the xecutor chip can do this right?
can anybody answer all my questions?