These skimmers are very easy to setup. Assembly, Plumb, Turn On, Dial In
I have set them up in the past. They do take a little dialing in, but as I stated earlier, there much more affordable, smaller, energy efficient skimmers on the market.
Also, as stated earlier, ETSS calls for a Iwaki 40 or 50 RLT Pump, which in itself is not a cheap pump.