Some great amazon offers on used books at the moment:
https://www.amazon.co.uk/Surrogates-...575069&sr=1-16
https://www.amazon.co.uk/Surrogates-...575069&sr=1-16
https://www.amazon.co.uk/Powers-Defi...575206&sr=1-81
https://www.amazon.co.uk/Dreadstar-B...575206&sr=1-89