It's a good idea to shop round and compare prices.买东西到处问问价格，比较一下，不失为一个好主意。You'd better ring round some travel agents to get some prices.你最好打几个电话到旅行社问问价格。Of course they're interested. Otherwise they wouldn't be asking about prices.他们当然感兴趣。要不然他们就不会询问价格了。