I noticed a few Roccat mousepads have a 5$ dollar coupon available and one mousepad has $10 coupon available. The coupon can be applied in your checkout cart. Items I've found are:
ROCCAT Taito Mid-Size 3mm Gaming Mousepad, Shiny Black (ROC-13-050) Discount price - $14.29
ROCCAT Sense Chrome High Precision Gaming Mousepad, Blue (ROC-13-103) Discount price - $14.99
ROCCAT Raivo Stealth Black High-Velocity Gaming Mousepad (ROC-13-301) - Discount Price - $30.55
ROCCAT Sense Meteor Blue 2mm High Precision Gaming Mousepad (ROC-13-104) - Discount price - $14.99
ROCCAT Sota - Granular Black Gaming Mousepad (ROC-13-110) - Discount price $14.99
I've searched for other brands and did not find any discounts, but of course if you find any let us know!