2-Pack Jockey GO Mesh Boxer Brief $8 at eBay
eBay with Jockey has the 2-Pack Jockey GO Mesh Boxer Briefs (black or regatta blue) for $8 with free shipping. Features quick-dry mesh, 3-dimensional leg openings and a no-fly contoured pouch. Similar pairs are about $13+.
The Jockey 1876 Boxers are $4 with free shipping
2 very similar deals were also reported by some other sources: