g200sx

I bought some used side skirts and was going to get them repainted match my car. i took it to one shop so far and they said it would be 250 to repaint them and install them. they also said they would need my car for two days. Does this sound like a good deal? I don't see why they would need my car for two days just to put them on.

I was going to try other shops and see what they would estimate. What questions should i ask them?

If that is the average price to paint and install them should i just attempt to do it myself? The sideskirts need to be stripped for one. What should I use to take off the old paint? Would they need to be primed?