Take that coupon to either Albertsons or Safeway and do the following deal:
Buy 2 Slim Fast 4 Packs for $10
- use BOGO Free coupon from the 1/1 SS (will take $5 off)
- use $1.50/1 Facebook coupon from here
- Pay just $3.50 for Eight shakes! Just $0.44 Each!
(Thanks, Extremely Wild 4 Savings!)