My experience with the Canon mail in rebate program. This was several years ago (2003 I think) and I purchased a 16-35 2.8L, 70-200 2.8L IS, and 50 1.4 lenses. The rebates at the time were $50, $50, and $25 respectively. I very carefully filled out all paperwork as if two IRS agents were peering over my shoulder. I cut out the proof of purchase bar code rectangles from my 3 lens boxes as if I was performing a bris on live TV. I carefully taped each of those rectangles compulsively level and at the ideal reference point of each itemized rebate listing on the form I was submitting. This would avoid the separation of proof from the form as well as the dreaded upside down dilemma which may never be flipped to show my eligibility for my claim to the fabled cash I so hoped would someday be mine. I triple checked my materials and also had a trusted friend check it as well. I made a copy of all of the materials and took a moment to pray that I would not need that copy and pinned it to the wall next to my computer. Countless trips to the mailbox over the next 2 months were made in vain. I called Canon and they referred me to the "check on your rebate" info on the form. They had no information from me on file. It was time to send in my copy of all materials with an added note to let them know why I was submitting copies of everything. Several weeks later I received a small piece of mail that was my rebate! I opened it to find that they had mistakenly interpreted the terms of the rebate to be that only one rebate per household and you guessed it. They sent me the $25 rebate for the 50 1.4. I called Canon and told them everything. They had a rep contact me and he had me email everything I had sent in as well as photos from the 3 lens boxes with the missing cardboard. Ten days later, I received the other rebates. Although my experience may not be typical, it has made me leery of getting involved in another rebate fiasco. My understanding is that Canon contracts a separate company to handle the mail in rebates. The same person that is making the call on how to process your request is processing a baby stroller rebate before yours and a vita-mix rebate after yours. They all have different terms and mistakes are going to happen. If you are wiling to fight for it, you will persevere. How bad do you want that rebate?