Walmart offers the Verus Advanced Silver Badminton Set for $29.99. Opt for in-store pickup to cut that price to $29.07. (Amazon and Target offer it for nearly a buck more.) That's $40 off and the lowest price we could find. It includes a net, two rackets, three shuttlecocks, 6" ground stakes, and 5" pole anchors.

Update: The price has increased to $29.99.