Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: Have not used yet. I'm sure it's adequate. If I had been made aware before agreeing to purchase, that the cost of shipping was more than half the cost of the item, I never would have ordered it. To a senior on a low fixed income, this was a great shock and has caused me to reconsider ever purchasing from Amazon again. Extremely disappointed!

Why was I not informed of shipping cost before purchase?