My supply cost for filters (booth, line, and paint), running my compressor, lighting, sandpaper, primer, sealer, paint and clear coat for a set of street plastics is estimated at nearly $250.
If I received a set of plastics that were in really good condition, I could have them sanded down perfectly smooth in about 5-6 hrs. If they needed primed for scratches/chips/gouges, you can pretty much double those hrs. Now the painting process with sealer followed by two coats of paint and two-three coats of clear, from start to finish with proper flash times between coats you are looking at 4-5 hrs. with proper booth prep and clean up after. You can also add time to 'stage' the pieces, set them up so you are able to get tricky areas that you would not be able to get just layed on a table, tie down with wire so parts don't get f-ed if you bump them (or the stand they're on).
So let's do some math....$350-$200(proper product and other overhead) = $150.....divide this number by the number of hours to properly prep and paint these pieces (see above) which works out to roughly 11hrs. (With absolutely no priming or repair of any sort, such as spider cracks, chips, cleared tank stickers, ect) and you're down to about $15 dollars an hr......and it only gets worse if you take pride in your work.
I hope people can see just how rediculous your quote is, and if not I hope they understand that you must be using the cheapest of sheet product available.
Evidently ^^ you do get what you pay for.....unless there's some guy willing to work for free on the internet........