For Prime members, Amazon cuts up to 52% off a selection of Gillette Fusion Proglide Razors, as listed below. Even better, clip the coupon on the product page to cut an extra $4 off. Prime members receive free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping starts at $5.17.) Together, that puts each at the lowest total price we could find by at least $6. The razors, after coupon and all with free shipping via Amazon Prime:

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.

Update: The items above are still available for purchase, however, they're either listed as "out of stock" or backordered with ship dates of 2 to 4 weeks.