MIA-BEY for $2400 in Business. Not as good as that $1700 business fare lax-sin earlier this year but pretty close! You must travel by November this year though.
I get their fare specials all the time and when another one pops up later this year for travel early 2018 as I'm sure it most definitely will I'll be all over that. What an amazing experience it was to fly QR in business.
FWIW I see that LH and UA were matching that fare in J for the same sample travel dates I selected in September.