Welcome Wheatie. Nearly every charity shop will have one or two Prattchet paperbacks on their shelves at a quid or two a pop, go in enough and you'd soon rebuild your collection. Oxfam bookshops will probably have half a dozen. There's a lot to be said for getting your books from charity shops, there's the fun of the hunt - ok, you could go into a regular bookshop and get what you want, but that's like going into a petshop to buy a pet, finding one second hand is more like trapping one in the wild... then there's the randomness of what you have to look through, if you keep an open mind sometimes it'll take you on unexpected literary diversions... there's the money of course, 40 odd books'll take a hefty wedge if you're paying full price... Oh and there's the charity thing as well, who knows, you might help someone.
Why don't you knock it off with them negative waves? Why don't you dig how beautiful it is out here? Why don't you say something righteous and hopeful for a change? ~~ Oddball