I don't normally rush to buy items for a rebate offer - I'm one of those people that often forgets to mail it in. BUT this one sounds like a real winner!
Walgreens is currently running a sale on FriXion pens at $1.19. Using the April Coupon Book (found in-store near the weekly sales ad), you can land these babies for a mere 19¢ each! Have them scan the coupon once - and $1 will come come off for each one purchased.
PLUS there is a fabulous mail-in-rebate found on the back of the package for $4.50 (when you buy 3). After rebate, this becomes a $3.93 Money-Maker!