我们差点就买下那套房子，但卖家在签约前突然抬价，让我们措手不及。

We almost bought the house, but the seller ___gazumped us by raising the price right before signing.

我们差点买到那套房子，结果有人突然加价截胡了。

We were about to buy the house when someone ___gazumped us at the last minute.