It may depend on which part of the planet you live. No such thing in Australia as far as I'm aware.Kinda wish I held off on the EF 300mm f/2.8L IS II USM, still it was $6247 with my CPS discount so I still am ahead, just not by quite as muchI've not heard of CPS discounts on lenses.
CPS in Sydney is Gold Standard, reason enough on its own to not shoot Nikon. It's an awesome service.
But CPS discounts? Lucky you...where?
CPS discounts are a Canadian CPS benefit. We don't get free clean and checks but my price for the 600II and 200-400 was $10,700 and $10,200 respectively.
For the past few years even the regular selling price in Canada for the big white lenses was significantly less than in the US. Many US customers (over at FMforums) have saved thousands on big white lenses by dealing with CameraCanada.com for their purchase. And that is without a CPS discount just with lower selling prices and a good exchange rate.
However, about 2 months ago the Canadian prices were all raised significantly and became equal or more expensive than the US prices. Now with the US price drops the US prices are now much better than the Canadian ones on the big whites.
I'm not sure if the CPS discount prices have been adjusted also. I'm glad I got all my big white GAS out of the way when prices were really good in Canada.