Right, I know this is sad with a capital S, but in case anyone is interested, this is the hall of fame for cheapest cards based on your recommendations...online only although the high street places sound great too...
Costco - (love the sound of the socks in washing machine card RusselBrussel) -( £12 for 50) = 24p each
Bookpeople - £7.99 for 30 = 27p each
Museum Selection - £6.99 for 20 = 35p each (although are doing offer for half this at the mo)
Unicef - £5.95 for 10 = 59p each
I have emailed Phoenix too but does anyone know how much each card works out? From the examples they have on their site they look great and are more specific (i.e. Happy 1st Birthday) than the places listed above which are all quite general.
TheGirlwithGreenEyes - I couldn't find Wilkinsons, are they a shop or a website?
Anyway, off now to think about more money saving tips, happy card buying and thanks for all the advice.