OP your a godsend. I gave up looking at these forums after the 2017 MBP didn't have 32GB option, and randomly came to check it today and checked out this thread.
I ALMOST replaced my battery a few months ago (I went in thinking they would replace it for free since it was under 80% with ~500 cycles at the time...since they advertised at least 1000 cycles when I bought it), so i refused when they told me I had to pay for it.
I just got back for the store today, and played dumb...after he did the battery test (68% @ 780 cycles) genius flat out told me they are out of stock of the top case and are replacing these with 2015 models.
He ended up ordering the top of the line 2015 model (2.8GHz, 16GB RAM, 1TB HD!). This actually worked out even better than I wanted...I actually didn't even want the 2016/17 models (rather have an extra year without dongle hell).
Best part my SSD went from a 512GB SATA drive to a 1TB NVMe drive! Pretty much got a 2k upgrade for 200 bucks lol.
Now I don't feel as bad waiting out for the 2018 model with 32GB ram...maybe even might stretch it out to 2019.
This 2012 MBP has to be on of the best purchases ever with this "fluke" replacement program