Ships from Hong Kong, but at that price might be worth taking a chance. I'm wondering what the snags are.
http://www.ebay.co.uk/itm/2-Channel-PC-Digital-Storage-USB-Oscilloscope-Probe-CD-/221113773504?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item337b686dc0
Answer - max frequency is only 3khz, which I would have realised if I'd read it carefully. Not a huge amount of use.