Pricing
Tactic
Remove the Currency Symbol When Possible
Removing this symbol reduces the pain of paying.

Overview
You should typically include the currency symbol in your prices — these symbols help customers understand when a number is, indeed, a price.
But if your number is clearly a price, perhaps you could remove the symbol (Yang, Kimes, & Sessarego, 2009).
Perhaps this tactic works best in luxury contexts, (e.g., high-end restaurant).
- Yang, S. S., Kimes, S. E., & Sessarego, M. M. (2009). Menu price presentation influences on consumer purchase behavior in restaurants. International Journal of Hospitality Management, 28(1), 157-160.