You are correct. They also list the same size with a Schrader valve. I bought a dozen 700 x 38c over a year ago and on the hybrid haven't had a puncture since. If any good to you you can have a couple for postage.
Bugger, should have read this fully before i ordered...
heh, NVM all sorted, and i can't grumble at 2 for under a fiver.
i grabbed presta as that means i don't have to alter my pump (it does both but requires you do remove the inners and swap em round)
but thank you for the offer all the same

hopefully i won't need em, but i'll be popping one in my saddlebag just in case.
thanks everyone

pete