I’ve got the same frame as the OP. OK, mine is 20″ and Neon Orange, but it’s the same era (2013) with Kashima CTD rear shock, Maxle rear etc. I’ve occasionally toyed with selling it as I really don’t need anything that capable for the sort of gentle trails I prefer. I’d be amazed if I got more than £700 for it though, despite it being in excellent nick.
Mind you, the main reason I haven’t sold it isn’t the financial hit. I got a decent discount as (like the OP) I bought it after the 650B version was released. The main “problem” is that, while it may not be ideal on paper, I’ve yet to find another bike I enjoy riding as much.