15% OFF on the new BSN SYNTHA-6 EDGE Protein (4LB), brings the price to $40.9 at Amazon when you “CLIP THE 15% OFF COUPON”. Shipping is free for Prime Members (Non members – free shipping on $49). This is currently the lowest shipped price we could find on this ‘leaner version’ of the popular Synatha 6 Protein by at least $14. Over 550 reviewers rated it 4 out of 5 star rating. Available in 4 flavors. The Syntha 6 EDGE brings the same amazing flavor you are used to from BSN but with only 150 calories and 25g of 100% Protein.