How to check amazon keywords ranking on amazon.com?

Hi,
I have a little problem with amazon keywords serp checking, I don't know how to check on amazon.com products rank on search keywords. I know manually page 1.2.3.4 but i need to know another easy way as like whatsmyserp.

If you know Please help me.
Thanks

You can easily track you Keyword rank in Amazon through AMZ Tracker it's easy to use and very cost effective.