Look at it this way:
1 Helix DBS1000 (one output): $134.99 (Reptile Basics)
1 Herpstat Pro (4 outputs): $315 (Bean Farm)
If I needed to control 4 different things (incubator, adult rack, sub adult rack, and baby rack), then I need 4 different controllers...at least, that's how i'd do it...
4 x 134.99 = $540 in Helix t-stats over Herpstat Pro's 315. It just made sense to me to spend a little more now rather than a lot more later..
and I'm far from "in the money"