This is an intermediate level deal, so please pay attention to all the details. You start at the Adorama product page for the Canon Pixma Pro-1 printer page. Also included automatically is a 50pk of Canon 13x19 inch photo paper. Take a deep breath and locate the "Buy together and save" area in the middle of the first page. Click on the link below. One of the options there is the Canon 50mm f1.2L lens. Click on the radio button next to it and add both to cart. The total price you will see there is $2,000. That's what you pay at checkout.
After you receive your order, and make sure everything is working to your satisfaction, while also paying attention to the deadlines and instructions, you can submit a mail-in rebate form. The PDF is available at the aforelinked Adorama page. After a few weeks, if all is well, you will receive a $300 prepaid American Express gift card by mail.
Yes, you cannot print from a lens, but this round of mail-in rebates (Q3 of 2013, July 1 through September 30) allows for cameras and lenses to be rebated. See the aforementioned PDF file at the aforementioned Adorama product page.
Because you do not receive cash back, we do not present this as a "$1700 after mail-in rebate" promotion. You receive a $300 prepaid American Express gift card after mail-in rebate.