I'm selling my white DS, in v good condition (and the screens are perfect) along with the R4 revolution cartridge and accompanying 1GB micro SD card, all ready to host games, movies, etc. Probably worth a little more than £100 but there's only so long eBay can refuse you before you start taking it personally.
eBay username - ben_packard
PS If you're not sure what R4/ROMs/Homebrew is about then check this out:http://www.r4ds.com/index-en.htm
Paypal/Cash on Collection