Here are some discounts on HDTV and Home Theater cables from Buy.com:

Super High Resolution HDMI to DVI M/M Cable - 10 ft
FREE BUDGET SHIPPING
Buy.com price: $9.99

Velocity HDTV Home Theater Connection Kit
FREE SHIPPING
List price: $99.99
Buy.com price: $29.79
$10.00 Mail-in Rebate
$19.79 After Rebate