Amazon has the ExOfficio Men's Give-N-Go Briefs (several color options) for $12 with free shipping on $25+. Features 94% nylon / 6% lycra spandex, they're available in sizes from S to XXL.
Has good Amazon Reviews.
eBay has the adidas Men's Climalite Game Time Polo Shirt (several color options) for $14 with free shipping. List price: $30. Features 100% polyester pique mesh, climalite fabric, rib knit collar, white embroidered adidas logo on right sleeve.
eBay has the Tommy Hilfiger Men's Premium Polo Shirt (several color options) for $18 with free shipping. $60. Features 50% cotton, 50% polyester, brand logo on left chest and right sleeve, available in sizes S to XL.
eBay has the Aeropostale Men's Slim Reflex Chino Pants (several color options) for $18 with free shipping. List price: $45. Features soft, stretchy fabric, 97% cotton, 3% spandex, available in select sizes from 27 to 42, with an inseam of 28 to 36.
Dick's Sporting Goods is offering Up To 50% Off A Selection Of Bikes And Bicycling Gear. Shipping is free for select items; otherwise, shipping starts at $9.95. Free in-store pickup is also available.