Today only, Walmart discounts a selection of sleepwear. Shipping adds $5.99, although orders of $35 or more bag free shipping. (In-store pickup may also be available.) A couple of best bets, with pickup:

Fruit of the Loom Men's Poly Rayon Jogger Sleep Pants for $9.88 (pictured, low by $2)

Secret Treasures Women's Jammers Snowman Plush Twosies Set for $12.99 ($3 off)