I wouldn't go with a used one unless it was screaming deal, you can get 6 mags with the gear up packages for about $520 some places, and those are about 30 bucks a pop.
Also I am not an optics fan boy either, but certainly have warmed up to them, especially a cut slide that mounts direct and still use the irons sights. I still like a good 3 dot or fiber optic irons, but I like options, especially on guns not meant to conceal and the red dot was a lot easier to adjust to than I thought it would. And for resale alone I would choose one without it if an option.
I like Taurus, I have both a G2c and G3c, and a revolver but I am skeptical enough about any new thing they put out, even variants of what they have already to wait a couple years and see how it shakes out.