HELP! "Scary" frozen mice...safe to feed?

[Salamander Rising]

Personally dealing with mice they do have a tendancy to fight at times and it looks like that could have been the case here, usually the hair comes off where the cuts are. The mouse in the middle looks like it still has a scab on it. You dont know if they were treated with any meds but regardless I would def stay away and cut ur losses on these IMO.

The guy called me back and was really nice about it.
Said he'd refund my money gladly but these are the same mice that he's fed his snakes for years, bald spots and all and he'd never sell mice he wouldn't use, himself.
His snakes looked great, BTW.

His opinion was they were 'fighting' and many of the mice do have torn/bitten/healed ears.

The next herp show is a long ways off I don't know what to do....