I think they are cheap enough in the class - in fact I was surprised how cheap they were- so far I have the 100 Red Meals, 100 Green Meals, 100 Deserts, Low Syn Snacks and Syn Free Branded.
Do like the sound of this Curry Feast book though - may look for that one!
Abe Books is a website which acts as an outlet for second-hand bookshops all over the UK - and indeed all over the world (I once found a very old book on the Cotswolds, for which I had been searching for years, in a shop in Rhode Island, USA!).
Do check carefully information about date, condition, etc. (Someone is selling a Free Branded Food book from 1996 - not a lot of use to us now!)