The thing with Maaco is that they are franchises. The quality of work from each location will be different. If you luck out, you can find a location that has hired some experienced bodymen (rare, but they're there, just ask alabassi). If you do the prepwork bodywork yourself and just leave them something to paint, you can save some money and end up with a decent job. I know of a 190SL that won a Concours competition and was painted at Maaco. The owner did all of the prep work, supplied the paint they wanted to Maaco, only ended up spending a few hundred dollars, and ended up with a competition winning car.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.