B&H now has the Vello BG-N7 battery grip available for the Nikon D800 and D800E for only $90. I had previously tested the Vello grips for the Canon 5D Mark II and 7D, and found them to be solid performers – especially considering the price. Check out the Vello grip for the D800 here at B&H Photo.
B&H has the Canon 6D for $1,999 (reg. $2,099) and the Canon 6D kit with EF 24-105mm f/4L IS zoom lens for $2,499 (reg. $2,899). Both Canon 6D options include a Lowepro camera bag and a Transcend 32GB SDHC card. Check them out at the links below.