I’d guess it’d be $4-500 for a refret, give or take, for a good repair person.
It’s not that much harder to work with than nickel, and it doesn’t deform nearly as much when installed (I have an arbor press and curved cauls), so a well-trued fingerboard leads to frets that are a little taller because they need less filing. They don’t seem to scratch up on the top of the crown from playing, either….
I have a nice small all-solid-but-not-valuable mando that needs frets, and I’m thinking that EVO is a no brainer for it. 20’ radius on the board and biggish frets sounds like fun.