i have been getting quotes for the last few weeks for a spray in liner to be put in my 78 cj and can't find anything under $500. let me know if you have.
My opionin - not to defer your thoughts - is that a spray on bed liner is nothing but pure weight. Not like you're going to be chucking logs into the floorboards? Expect at least a 50-60 pound increase where as an acrylic enamel paint would hold up just as nice in the cab with about a 10 pound weight gain.
Gaston Auto Glass out of Gastonia, NC. I received a quote from them to do the inside of a jeep and said that on average about $450. this is the first i've seen under the $500 mark.