Instead of stockpiling yet another Apple machine (I have 4 old models in the apartment already) I'm selling the macbook retina pro I bought last year.
Here's a link to its specs. It's the top line model from the late 2013 build:
https://support.apple.com/kb/SP690?locale=en_GB
It's in very good working state. I bought it for $3300 (iirc). Happy to sell it for around half that price.