i was having a mooch through e-bay and came across these. so as the title says are these expensive or reasonable given what they are?
http://cgi.ebay.co.uk/TERRY-PRATCHETT-T ... 2ea9acff81
http://cgi.ebay.co.uk/TERRY-PRATCHETT-U ... 2a0559458d
http://cgi.ebay.co.uk/TERRY-PRATCHETT-T ... 2ea9acff81
http://cgi.ebay.co.uk/TERRY-PRATCHETT-U ... 2a0559458d