Like Ralph. I pay $5.50ea. for my chains to be resharpened and it's a better deal than spending my time on them. I normally take them all in at once, 10" 14" 20". I have 4-5 chains per saw, so rotating the chains is no big deal.
Thats what most of my firewood cutter guys do. 4-12 chains dropped off and I do them for $5 for 24" under.
Sometimes if I am not busy I will do them while they are here and we just BS and have a brew while hooking them up.