Holy fook, you're right!?!?!?! I just looked on Ebuyer - a 120gb drive costs £40-odd
Fooking prices have come down since I last bought a drive - I paid £30 for my 80gb drive last year!!!!
The slave drive in my PC is an 80gb drive, but I am only using 25gb on it so far, my main drive is using 44gb (out of 60) but then, I do have a 60% back up of my slave drive on there also...
My family pc has a 40gb drive and is currently at abotu 30gb used, but I suppose when you strip that down to mp3's, doc's, files and pics, it's probably only 20gb....
so 20+25+10 = 55gb roughly that needs to be backed up, so might be better off with an 80gb drive, possibly a 100gb drive....
Thing is, since it won't be used a lot, I don't wanna pay a premium for it (plus, I am poor

)
Ideally, if I could get say, 80 or 100gb drive plus an enclosure and relevent PSU's, cables etc for abotu £50 that'd be about right....