What's the name of this pairwise price-setting scheme?

2018-04-16 14:31:18

Two siblings inherit equal shares of a house. To decide who gets to live in it, they each bid what they think the other half is worth. The person with the higher bid gets it, and pays the other sibling halfway in between the bids. Therefore, everyone gets better than their bid: the seller receives more and the buyer pays less. Does this scheme have a name?