I sold my 6.8 upper, so this ammo is now available.
I have 1,000 rounds of Hornady 6.8mm SPC 110 gr BTHP with Cannelure. The best prices I can find are AmmoToGo and Natchess, for $20 / 20 rds plus shipping.
So, no tax, $18 per box plus shipping.
I'm in NW Houston, or in the Galleria area during the work day, if you are local and want to pick it up.