For someone with limited electrical knowledge and a lack of knowledgable friends this is perfect. I’m not judging them, you can’t know everything. It’s about as close to plug n play as you’ll get.
If you’re looking at more complicated circuits or if you’ve got more than 6things you want to control. It would benefit you financially to look at wiring it all up yourself. It’d take some pre-planning and learning but it’d cut your cost dramatically.
I have 15 switches that do a multitude of things, and I think the switches themselves and the PDM60 I have was around $300 the wire I have maybe $100 in for the whole machine.