I have done adword campaigns on a commission basis for one company I work for. And it worked ok, because I just used an affiliate link as the adwords url, so that all sales that came via adwords were recorded and then my commission was workedout from sales.

Using that way you can send clickers to any url and if affiliate link uses a cookie then it can record sale even if done later whatever.

The company paid for the adwords directly off their cc, so it was no risk to me and did not cost me anything as the adwords a/c was in their name, but I was most happy doing adwords on that basis.

I do an adwords campaign for another company on a non commission basis and was paid a one off fee to set it up, but of course ever since I am asked to check this and that, and wish I had worked out commission with them instead, as it is more motivating when on commission.

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