Good news, Bob! I bought an Elegoo Mars resin printer about a year and a half ago and have had good success with it.
Last month I changed the release film for the first time per the instructions. What the instructions DON’T tell you is that the new release film has protective film on both sides that has to be removed, which I didn’t figure out until after a disasterous print.
I’ve printed a bunch of parts since my purchase, and even gone as far as printing and entire car (albeit in four sections).