eBay has the Vera Bradley Women's Pajama Shorts (Multiple color options) for $9.99 with free shipping. List price: $28. Elastic-waist summer pajama shorts with drawstring detail, slip pocket on the front, available in sizes XS to XL, although not in all size/color combinations.
Tanga has the Gold's Gym Men's Body Mapping Lifting Shirt (Long-Sleeve or Short-Sleeve) for $9.99 - $1 off with coupon FITNESS = $8.99 with free shipping. Features targeted muscle support, moisture wicking material, protective padding, and made of 86% polyester and 14% spandex.