You won't get true winter whites in a pet shop, the closest you'll get will be Russian hybrids. If you can wait a bit, the next midland show is in Great Alne at the end of May, I'm not sure exactly how far that would be for you but there may be WWs on sales there? Otherwise I'd get in touch with the midland hamster club and ask for a list of breeders? I think you can email
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