The two I bought for 3500$ are worth about 20-25k each. I hold them both as rentals though. i think I will make more money in the long run just renting them out. The one I bought for 2k could sell for about 35k once rehabbed. The owner was real distressed thats why I got it so cheap.
I advertise to people who owe taxes and people that own the house free and clear. Most of the time people laugh at my offer but sometimes they will call me back when they get more desperate. If I buy a house with taxes owed I will usually try to buy for 1$ then take subject to back taxes. I will work out a payment plan with the company who holds the tax lien. So I basically get the tax company to finance me. They usually require 15% of taxes owed down and then finance the rest over 15-18 months which is not a bad deal. I try not to drive around and look for distressed properties anymore I just look up the tax records and send out mailers. If I am out and see a house I like that looks distressed I will send a flyer though. I am investing in Rochester NY right now.
Also my houses are not in areas where I would want to live but I invest to make money. I do keep my places nicer than most though.
Good luck