plasti dip or any rubber coating will be your cheapest alternative which you can easily do it at home at a fraction of the price of respraying a panel at panel shop/spray painter, you can get them in tubs ( which you will need to get a portable spray gun) or you can get them in cans.
I sprayed the whole car with 9 cans of rubber coating. I used 3 types of following spray;
Plastidip
Rustoleum - Peel Coat
Motor Spray - Pee Coat
Both Rustoleum & Motor Spray are very similar and gives you a very smooth finish but their spray nozzle aren't as good as Plastidip. The Plastidip on the other gives you a rather tacky finish.
I've used rustoleum as my undercoat and plastidip as my top coats. You can simply stick with one brand but I highly recommend the plastidip nozzle and you can use any brand.
I've been out of country for the last 2 weeks and will be back in next 3 weeks, happy to post some photos and walk through if you require.
Look up on youtube for dip your car...
