Maaco Budge Paint

I am looking to get my 74 Swinger painted. It needs a little body work as there is a little rust, but there isn't any rot. I would really like to get it painted soon and definitely don't have the $2500 i was quoted for the job. What is so bad about Maaco? If it was only a temporary paint job, would I be doing any unrepairable damage? And if I was to go to Maaco on a budget and get my car painted, what is the best paint and body work package they have? Thanks!