I have a used Iwaki MD100RLT pump used for about 3 months on a prop set up. The reason it has rust on it is because when I was plumbing up the prop set up that it went on I got a little pvc cement glue on top of the pump. When I noticed it the next day it had dried on it so I peeled it off. When I did so the part the glue was on the paint peeled off. The pump was only ran for two months and I took the prop set down because of money problems. I can assure you that the pump is in awesome shape besides the little rust. I'm asking $225 plus shipping.

