Jockey via eBay offers its Jockey Men's Staycool Stretch Midway Boxers 3-Pack in White
or Just Past Midnight/Nerves of Steel/Soft Sky Blue for $7.99 with free shipping. (Black is pictured but not available.) That's $26 off and the best price we could find. They're available in sizes S to L, although not in all color/size combinations.