Tracking Amazon Sale Referrals / Keywords

I've made a few sales through amazon by sending the traffic from adwords, or pay per click.

My problem is once a sale is made I have no idea what keyword produced the sale.

Does anybody have any tips on how to track what traffic is resulting in a sale?

I could redirect the traffic through a domain and capture the keywords but if there is a simpler solution I would love to hear it.

thanks

 

Mmmm...r u useing PPC?
the only way I can think of is to use different Associates ID

 

yes using ppc, the multiple associates id worked for 5-10 keywords but doesn't scale very well.

I just abandoned the campaign .

Thanks for the response.

 

Im having the same issues.
Did you get them solved?

 

nope, still haven't found a solution other than the ridiculous creating a single tracking id for every keyword.

the floor is open.