Groupons terms are not really negotiable. They offered me the same terms when I called them about my retail stores. (want min 50% off for consumer, they take 5

Groupons terms are not really negotiable. They offered me the same terms when I called them about my retail stores. (want min 50% off for consumer, they take 50% of revenue). I told them it was too rich. They wouldn't budge. I walked away. They have a 6 month waiting list in some areas, why would they negotiate. I am amazed that so many businesses accept these terms. There is just no way it makes sense.