Kmart offers the Essential Home Cruz Convertible Futon in Black, model no. 3218098K, for $89.99. Coupon code "KMART10PSAVINGS" cuts it to $80.99. Choose in-store pickup to dodge the $90 shipping fee. That's $79 off list and the lowest total price we could find. This microfiber sofa folds down into a lounger, and measures 29" x 68.9" x 32.2".

Of note, Shop Your Way Rewards members will earn a Kmart credit with this purchase and may be eligible for additional credits and discounts.