I use a hydrofarm thermostat, I'd say it's more reasonable for the single (or few) snake owner. About $30.
I'm not familiar with the zilla humidity/temp gauge. It needs to have a probe that you can place directly on the glass to see what the temp is that your snake is actually experiencing.
You can get a dimmer switch for the CHE at home depot or lowes. $12.

I agree though, don't use the uth until you can get a thermostat. Which also means no feeding (unless your ambient temps in the room are like 85+) so it's pretty urgent that you get one. It has been proven time and time again that bps get burned by them. I know it seems weird, why wouldn't they just move off of the heat source? But they don't. They get burned.

I'm sure you can get together all the stuff that your snake needs! It's a learning curve, but hopefully, a short one. Then you can enjoy your new pet for years to come!