Yeah I think it's pretty reasonable£60 quid a wheel is sod all.
Jack up car
Remove all wheels
Remove tyres
Remove weights
Remove valves
Strip wheels
Inspect for damage
Bake wheels to degas them
Powdercoat wheels to an even finish
Clearcoat wheels to an even finish
Bake
Refit tyres with new valves
Balance wheels
Refit to car
Would you wanna do all that for only £60 per wheel?
If you’re good at something, never do it for free.