Sounds like a premium domain that they didn't know was premium until they checked the price for real rather than it being the standard tld price, at which time

Sounds like a premium domain that they didn't know was premium until they checked the price for real rather than it being the standard tld price, at which time it cached and started showing the real price Guessing you tried to register a dictionary word on one of the new tlds? Been got by it too "Ah. That would be why this gem of a domain was still available"