You mean CreateSpace? Yes, that would be a sufficient ISBN. I'm not FOND of that solution – you can see some of my reasoning at https://ideatrash.net/2013/11/measure-twice-register-for-isbn-once.html – but it counts.

The prices for ISBNs go down DRAMATICALLY in bulk, though, so you can cough up enough for 10 or 100 and be set for quite a while longer. (I also don't believe in setting a separate ISBN for ePub/Kobo, only when the CONTENT differs, so there's that as well.)