I don't know if this will help but I have just been accepted to medical school so thankfully don't need to go through the UKCAT again. However, over the last two years I have attended two Kaplan UKCAT 2-day courses (£299 each time) and am selling all the preparation material from the course, test papers, plus all five of my UKCAT text books. I estimate it at being worh around £700 worth. I don't expect this though, especially as the material has my notes on. Willing to accept sensible offers.
What I can say is the Kaplan material is outstanding and incredibly useful.
Please contact me if anyone wants this.