Are you buying to hold or flipping? If your assessment of ARV is correct, these are superb deals. Depending on your market, in this price range any time you are looking at $30000-$40000 the property is worth further consideration. Just to be sure, tighten up the range of values of your comps. Are these bank owned?
and averaged out the high and low values of the property. I tried a bunch of properties that I’m familiar with, and it is very, very accurate in my case.