Head over to Mambo Sprouts to print off a coupon for $0.50/1 off Luna Protein Bar. If your store doubles, you can easily get these for FREE as Luna bars always go on sale for $1.00.
Also, if you are looking for healthier food coupons, Mambo Sprouts is an excellent resource.
Note: Tom Thumb has these for $1.00 until 4/19, so FREE after coupon! (Thanks Madalina!)
Hey! I'm Jasmine. 
Tom Thumb has these bars at 10/$10 thru next week so FREE
NICE! Thank you, I’ll add that up there.