I agree that the interface is way overwhelming. It's very hard to see what the text boxes are for because the labels are positioned so funny. I was also not expecting it to open a new window to Amazon. I thought the results would stay on your site (like on CCC). Also, how do you pronounce the name of the site anyways?

From a functionality standpoint, I think this works great. I wish amazon would let me search by all these features. This saves a ton of time and headache with searching amazon.

One final thought. It would be great if it supported smile.amazon.com. I support the "Youth Competitive Programming Circle" with all my purchases. It would be nice if all the links went to smile.amazon.com instead of straight amazon.com.

Overall I like it. Keep at it.