Dunno if you've seen it, but Apple sells
certified refurbished products for assorted discounts. In the last few years I've purchased one new iMac and three refurbished machines. I can't tell the difference other than they arrive in a nondescript box. I bought two 15" MBP which I use for work, mainly, and have been entirely satisfied. My last purchase was in 9/2014 and I got a 15" MBP, quad-core i7 2.6 GHz, 512GB SSD for $1899, supposedly something like 20% off the MSRP. The warranty is the same as a new MBP, and so far as I understand the refurbishment process includes a new case. You may want to consider it...
BTW for me a major shortcoming of the MBP was the lack of a ten-key numerical keyboard, but I found a BlueTooth Canon 10-key which works great.