Sony USA launches new lens rebates! For the first time save $100 on the 100-400mm GM and 200-600mm G lenses SonyAlpha Admin 4 years ago Today Sony USA launched those new lens rebates at Adorama, BHphoto and Amazon. The deals include the first rebates on these two lenses: $100 off on the 100-400mm GM at BHphoto, Adorama, Amazon. $100 off on the 200-600mm GM at Amazon, BHphoto, Adorama..