Pricing
Tactic
Add Space Between Discounted Prices
A visual gap makes the numerical gap seem larger.

Overview
You conceive numbers along a horizontal ruler.
Therefore, you confuse visual distance for numerical distance: Numbers seem numerically further when they are visually further (Coulter & Norberg, 2009).
Obviously, the gap can't be too wide — you still need to group these numbers into a meaningful unit. But always leave a breathable gap between the original and discounted price.
- Coulter, K. S., & Norberg, P. A. (2009). The effects of physical distance between regular and sale prices on numerical difference perceptions. Journal of Consumer Psychology, 19(2), 144-157.