We plan to buy the next home before closing on the current one. The time difference is just a couple of weeks. The buyer of the current house has all his ducks lined up and the deal looks very solid.
Also, the price of the current home (the one we are selling) is very realistic.
Is there somebody out there who sells insurance that buys the current house from you if a deal falls through? Seems like there should be. This deal will only fold if seller dies or is fired or the like.