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Thanks all for your comments. I am not awfully good with the PC!! so not sure what is involved in setting up paypal, but sounds like a good idea. Might get my kids on t it.
There are far more of the postal paid ones returned. probably nearer 60%, but again if they are paid for its up to the individual then.
I agree the quiz has been spoiled on here but without dragging it all up again,really dont see a solution, apart from the 'no asking' policy.
Anyway will give it another go and see what happens I suppose.
I wouldnt fancy the answers being sent back via email, seems a lot harder work marking them, but i expect it may come to thast if postage costs keep increasing. i do try to keep cost down by offering to send out a follow on back with their marked sheet, but quite a lot dont take up the offer.