Got this in email today. Not sure if it's a single use coupon or not, but thought I'd throw it out there.... Each is normally $20, and the coupon is for $5 off.
Dear Futuremark User:
We are offering our 3DMark06 Advanced and PCMark05 Advanced benchmarks at a discount for a limited time.
Click on the below link (or paste it to your browser) to take advantage of this offer:
Please use this offer code and receive $5 off of each download version:
Offer code: 3d06-v11-5ids
Your code will be valid for the next 10 days following your receipt of this e-mail.