Walmart offers a selection GranRest 10" Gel Infused Pocket Spring Hybrid Mattresses with prices starting from $135 with free shipping, as listed below. Choose in-store pickup to avoid the $5.99 shipping fee. The sizes: Twin for $135 (pictured, low by $51) Full for $169.99 (low by $64) Queen for $193.38 (low by $73) King for $224.18 (low by $85)