shop around
to shop at different stores to find what you want at the best price
去不同的商店比价，为了以最实惠的价格买到到你想要（也可引申为为了找到最好结果而四处寻觅）
You should shop around a bit before making a decision.
你在决定买东西之前应该到处看一看。
He shopped around for a firm that would be flexible.
他到处寻觅一家可灵活变通的公司。