900 uniques for the month and 2 measly dollars in adsense

I would put a big 336x280 ad right below where it says "Welcome to Tweety Friends" and in the same spot on the rest of your pages. Use white bg and border. I bet that will get a ton of clicks

 

Lets say your shop on a single page display 4 items.

You can do this
3 items = your own stuff
1 item = chitika ad


But now your shop is purely chitika ad...

 

If I were you, I'd email Chitika and ask them to give you a yes or no... I still think you are not labeling the ads the way they want to.