Buy a select Gitzo Basalt Tripod between now and July 31st and receive a $100 rebate check ($50 for the GM3860C). Download the rebate form
for more details.
Buy the Gitzo Basalt Tripod at: B&H
The Killer deal appears to be the Gitzo GT2830 Series 2 Basalt 3 Section Tripod
(sold by Amazon.com). This tripod typically sells for $649 before rebate, but Amazon.com has it for only $449.90 shipped before rebate.
The only catch I see is the "Usually ships within 2 to 5 weeks" notation. "Rebate requests must be postmarked by August 31, 2011." Even without the rebate, this is a good deal.