They actually have pretty significant rebates from time to time as well. They're just a lot more quiet about it. You also usually have to buy whole set-up or packages to get the rebates though instead of individual items like with Canon. This has allowed them to retain better value over time, but a higher initial investment too.
Yes I do like how Canon gives lens rebates, but Nikon wants you to buy a body. Don't make sense what you if already have the latest body but want a new lens? I feel like if they gave 100-200 off people would buy them. Seems like they lose sells of this. I guess they don't lose enough to care though.