How much would it cost to get from PEK airport to Crowne Plaza Beijing Wangfujing via taxi?

It costs CNY90-100 by taxi.
Instead of metro (at least two transfers), you are suggested to take shuttle bus line 13 to Wangfujing Street and then walk north for 2mins to your hotel. It costs CNY25.

I don't think credit card can be used, you'd better prepare some cash.