My father-in-law owns a Peregon bed cover...it's been on his farm-truck for over a year now, and he loves it. It serves it's purpose very well; it's quiet, attractive, and well-engineered.
Your major complaint seems to stem from the fact that you tried installing a precision engineered product on an already beat up truck. If you're bed was bent and abused already, it's your own fault that it didn't work.
Installation on a truck-bed that's in good shape was EASY. I'm sorry it was so difficult for you. Your complaint that you needed an extra socket to do the job? Excuse me...but boo frickity hoo. When you're working on a truck you better have some tools.
And I can attest that the images and scenarios are staged and grossly exagerated. It opens and closes very well.
One more thing - complaining about terms and conditions that you agreed to at the time of purchase is absolutely silly. I work in the airline industry, and I hear cry-baby-sob-stories all day long about how I should waive change fees for this and that. Guess what - you agreed to it when you purchased - it's YOUR responsibility.
Grow up. Go cry somewhere else.
My .02