Today only, eSaleRugs takes an extra 30% off all rugs sitewide, which are already discounted by up to 75% off. (The discount is taken in-cart, and prices are as marked.) Plus, buy two or more rugs and get an extra 10% off. Even better, orders of $300 or more get a $50 Amazon Gift Card for free. With free shipping, that one of the best overall discounts we've seen on these items at eSaleRugs. (We saw this same discount combined with a $100 Restaurant.com gift card instead of an Amazon gift card in March, since expired.)
A best bet is this 65" x 92" Shag Rug in Brown (pictured) for $623. In-cart it falls to $436. With free shipping and assuming you use the gift card, that's $345 off and the lowest total price we could find. This hand-knotted rug features synthetic silk and 40 knots per square inch.