Basically this model:
http://www.apple.com/shop/buy-mac/macbook-pro?product=MF840LL/A&step=config#

I own a startup and a powerful desktop computer, so between my work computer and my home desktop, I have no use for this anymore. Its very gently used, as it has been sitting idle in my room all year. No apple care warranty remaining, because it was purchased april 2015. Basically, if you're thinking of buying a new MBP, you get 25% off for this thing having sat in my room for a year.

Specs:
2.7 GHz (turbo up to 3.1 GHz)
8GB RAM
256 GB hard drive SSD (base model is only 128GB)
Beautiful retina display
Very light
Very good battery life