I don't know of any shops, but nickel plating is very durable and corrosion resistant. Unlike chrome, it does not blue but turns a nice golden hue when heated.
I had mine done on my '86 Vfr and they looked great!
Took a chance , went to "The Plating House" (Dufferin and Steeles area) .Gentleman there told me that regular nickel plating (using electric current) would not hold up very long at all(??!!). Secondly, if I went for Electroless Nickel, the surface has to be absolutely clean and only the base metal.Apparently our systems are aluminized or something, and this has to come off. Lastly, if I went for the regular plating I would be looking at $1000.00!!!!!!!!!