Contact customer service and ask them about fixing the mechanical error. There's no magic premium for a slab the wrong label. Other than your ability to cherry pick it because you know what you're looking at, of course. They should fix it for free and even credit you for the shipping charges to your account although sometimes have to ask for that.
-----Burton
50+ year / Life / Emeritus
ANA member (joined 12/1/1973)
Life member: Numismatics International, CONECA
Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club
Owned by three cats and a wife of 40+ years (joined 1983)
Author: 3rd Edition of the Sample Slabs book,
https://www.sampleslabs.info/