Member Price vs Regular Price Display

I have members ask me all the time, "How do I know I'm getting my discounts?" Then we take the time to show them that indeed, they get a discount.  It sure would be great if there was a fun graphic next to prices on memberships that shows a "regular price", crossed out with a red line, and then have member price, or even members savings over regular price to show them they are constantly getting value from being a member.  EX) A regular league is $15 without a membership, but the paid members get it for $12. Displaying their actual savings over "retail" in the form of a 20% discount, or monetary amount sure would be great.