Repti-Bator = Not worth it.
It simply doesn't hold humidity well. I tried siliconing the holes, and it still won't go above 80% humidity.
For $20 more you could just get a Hovabator with a Herpstat.
That's what I'm going to stick with from now on. I've thought over the options...if I use one giant incubator, then a single equipment failure could cause me to lose everything. If I stack a bunch of Hovabators controlled by separate thermostats, I don't have that issue.
Using substrateless incubation, I've had fantastic hatch rates this year, and I can fit up to 5 ball python clutches in a single Hovabator.