Lucky Vitamin offers the NooTrees Bamboo Pulp 3-Ply Bathroom Tissue 12-Pack for $10.19. Add it to your cart via Autoship to cut it to $9.17. With $5.95 for shipping, that's $5 off list and the lowest total price we could find. It's made with 100% virgin bamboo pulp.
Be sure to cancel your subscription after receiving your item to avoid being billed for subsequent shipments.