In my opinion I think that your payment price is fine since you received quite a few calls when you initially put the house on the market.

I think that it could be the street appeal of the house that is letting you down. This is based on the fact that all the callers whom you asked to drive by the house never called back. Is the front yard neat and tidy? Maybe you could improve it with a few plants. How does the front entrance look? Could it use a new floor mat? What you could do is to maximise the street appeal of the house as much as possible while keeping within your budget. You may also want to try “hand holding” any callers through the house personally so you could what them through the benefits of your home-buying program and how they can own their own home NOW rather than in the distant future.

So good luck and let us know how it works out.