My take has been to forego extended printer warranties, put the money in the bank, and wait around for sales like these as my printers pass the 2+ year mark.
My only problem with that now is that my present 3+ year old 8300 is working so good that I can't talk myself into going through the whole drag-it-in and set-it-up procedure, coupled with the slight possibility that a new printer might have some issue. So I will doubtless get stuck with some down time in the near future. No matter, I'm just gonna live for the day.
Usually the best time for printer fire-sales is in December, although the sales were less dramatic in 2013 than they had been in previous years.