I recently paid £170 for a 550 frame, SA, centre & side stand, eng brackets, battery box, I think that was quite cheap, I also had a quote for over £400 from a well known motorbike painter, so I think that’s the range.
I also had the offer from someone to paint the frame with 2k which would have been nice but I had to strip the old frame paint myself. I just didn’t have the time or inclination to do that. I could have had it grit blasted and taken it to him but I figured that by the time I got it to him and he got around to painting it it would have flashed rusted.
So like Ken 4004 has said well worth the money not to have the hassle +a good hard wearing finish.