JuSiPa

Do you support other countries? I'm in Britain, and don't mind buying a book from Timbuktu and shipping it over if it's cheaper.

Also you should have a feature which alerts people when a book that they need has lowered in price.

Don't piss about son. Just code that feature into your website and be done with it. If people want to use it then great. If not then it's their loss. BTW I'm no student - in industrial engineering we often refer back to textbooks (e.g. just last Friday I referred to a chapter on boiling in the Handbook of Heat Transfer by Warren Rohsenow). There is an industrial demand for your services.