Join the pain, split the gain.
People are more sensitive to pain (losses) than to gain. On your pages, group pain points (e.g., price and shipping) into one item and split gain points (e.g., discounts and free shipping) into multiple items.
These techniques leverage findings from several psychological studies. Humans are more sensitive to pain than to gain. The happiness of finding a $20 bill on the sidewalk doesn’t match the pain of losing a $20 bill in the same location.

