最地道的问价格方法就是：How much
例如：How much is it?它多少钱?
How much are they?它们多少钱?
另外还可以说：What's the price of it?它的价格是多少?
或者：I wonder its price.我想知道它的价格.
或者：May I know its price?我可以知道它的价格吗?