I have used aftermarket body parts (not made in Japan, not OEM) on a couple of vehicles, my truck and my Daughters Honda. They are OK, not a perfect fit but real close. If you can believe it I think the metal is thinner then OEM. I use them on the wheeler because they are cheap, the last front fender I bought was $26.00 and the chrome grill was $30.00 and the front marker light was $15.00. If you do not care that they are a perfect fit aftermarket is the way to go. If you want OEM, fit and quality find someone who is parting out a truck and buy the OEM parts.

Painting is another subject, cost depends on the quality of the job and the materials, some places will paint the complete vehicle for 3-4 hundred dollars, but remember you get what you pay for.