Well, I've just searched for it and it goes for about 46$, I'm not sure where you can find 30 pound for it. 0.5BTC is about 65$ right now, and I'm not sure how easy it is to sell a 5400 RPM 120GB HDD right now. Do you have any past reputation?
Shit, you're right. I can get £25 for it :/
Um... Not really, I've not really posted too much here. The only thing I've done is sort out a youtube account with the restrictions removed for some guy in some oppressed country somewhere, a task for which I got 0.33 btc (or about £18). I'm not really famous anywhere on the internet, but Luke-Jr has access to another forum where I'm fairly well respected. Not sure how long it's been since he worked on that project though.
I have some bits and pieces that I could potentially sell, such as two old LG android phones, etc, but I understand if that's not really enough for you.
I think the shipping and other fee's would be too much of a hassle. I consider this loan too high risk, especially considering I don't have that many BTC's so I'm picky in the loans I accept. Maybe Stunna would give you a loan? (He has a loan topic too)