I'm surprised this article didn't mention Google's Bid Simulator, which allows you to see a very good estimate for the number of clicks you can receive for a given keyword/creative pair (or adgroup, campaign) at bids you're currently not using:

https://support.google.com/adwords/answer/2470105?hl=en

More speculatively, Keyword Planner allows you to add a bunch of keywords with bids to your account and see what kind of traffic you might expect:

https://support.google.com/adwords/answer/2999770?hl=en

Obviously this is less accurate since you don't have a lot of account history with these keywords, you haven't selected creatives yet, etc.

Disclaimer: I've worked a bit on all of these tools.