What it means
How much is it? 多少 means "how many/much," 钱 means money.
When to use it
The single most useful shopping phrase. In markets, haggling is expected — follow up with 太贵了 and 便宜一点.
Examples
zhè这ge个duō多shao少qián钱？
How much is this?
yī一gòng共duō多shao少qián钱？
How much altogether?
qǐng请wèn问，zhè这ge个duō多shao少qián钱？
Excuse me, how much is this?
The full set of survival phrases for greetings, dining, shopping, and getting around, each with audio.