This deal has ended.
Buy.com has a 4-Pack of 6ft. HDMI Cables for only $19.99 after a $20 mail-in rebate valid through 7/22. Plus, shipping is free and there is no sales tax (except CA, MA, MD, TN). Also, new customers can use this $5 off $50 coupon (applied to before-rebate prices) or new Google Checkout users can sign up and get a $10 off discount (you can't get both). Either at $5 each or at $2.50 each (if you can use the Google Checkout discount), plus free shipping, this is the best deals on HDMI cables I have seen.