Hulislem via Amazon offers the Cylen Home Ventilated Memory Foam Orthopedic Seat Cushion for $26.97. Coupon code "73OJHF7G" drops it to $13.75. Plus, Prime members bag free shipping. (Non-members can spend $49 to bag free shipping; otherwise, shipping costs $7.79.) That's $1 under our mention from two weeks ago, $43 off list, and the lowest total price we've seen. It features memory foam padding and charcoal-infused bamboo.