Average Costs for AWS

Hello, I am wondering for giving the Amazon Cloud Search a try, but I find it way tooo complicated to get just an estimation what costs would come with it for an “average” web page or shop.

Maybe you can give some idea, if we might talk about 5 or 10 or 100 or even more USD per month?

I had tried Google Search before, there I ended with less than 5,- Euro a month – but I was not happy with the search itself.

THANK YOU!
Sandra