"Hello ******,
As we have decided to lower our prices on our Buckshots and Slugs, we felt it would only be right to credit the difference to those customers who have already purchased these items this week.
Please note you now hold a store credit of $###"
Another reinforcer that you don't need to go to school to have class, and you don't need to have a storefront to provide excellent service. I don't know how many orders I've placed with you guys, but this one certainly won't be the last. Keep up the great work!
TT