Dupont Paint Costs!! Sticker Shock!

How good of quality is the paintforcars.com or from http://www.tcpglobal.com/?

We need to get paint on the son's Duster this summer, but have a very limited budget this year. I'm not looking for something that will last 20 years, but at least 3-4 years would be good.

I purchased some Merlot metallic Acrylic Urethane single stage from paint for cars along with 2x primer.Sprayed the front fender with the Merlot doing very little prep work just to test it out.Seamed to spray and lay down very good I will be doing my car next winter as I was not set on a certain color and it will be a low budget build