I picked up a customer return psk 100h for a very very good price imo. Supposedly the pump was bad and it leaks. All of the o rings look good and the pump gave response when I plugged it in for a second. So I'm hoping that it moves water. I'm also assuming all of the pieces are there. I didn't get to look at it very long. UPS was late and I had to go. Anyway I'm going to set it up tomorrow and give it a test. I'm hoping if anyone can tell me how to prime and adjust water level. Added 7/3: I set it up and found one small leak that I fixed by cleaning to O ring and the groove it sits in. Got it primed and running hanging on a bucket. The pump is LOUD. Figured out how to adjust the water level, that was very simple. I'll be contacting Eshopps for a quote on a pump and it'll be good to go. For $31 + whatever the pump runs I can't complain.