4 Down. How many more to go?

They say this is a buyer's market. That doesn't mean it's easy to buy a home. We've now had 4 unsuccessful attempts and find ourselves back at square one. Just this week, our accepted offer on a foreclosure (pending the signed paperwork) fell-through when some party came in a put in an "a much higher" offer, waived inspection and legal representation and got the house - all without any word to us until it was signed sealed and delivered. Now doesn't that smell rotten? A real pity of course, since we were head-over-heals in love with that place. What are the chances we'll get lucky on house number 5?