> 1- 6 pk. $16.00 12% off retail price shipping $6.00 > 4- 6 pks. $57.00 20% off retail price shipping FREE > 8- 6 pks. $100.00 30% off retail price shipping FREE   SKY Nutrition will ship using either USPS or UPS. Orders may take 2 to 5 business days to arrive