RugsUSA cuts 75% off a selection of rugs via coupon code "BLACK75". With free shipping on all orders, that's the best deal we've seen from this merchant. Coupon expires December 1.
A best bet is the Rugs USA 5x8-Foot Keno Trellis Rug in six colors (Slate pictured) for $372 before the above coupon, $93 after. With free shipping, that's $279 off and the lowest total price we've seen for any similar 5x8-foot rug this year.