I have not seen any 223/556 in 1000 round cases in SE ma since Feb 2013. I don't even see 1k/cases of tula or wolf
Closest thing I have seen is the 420 rnd fed m193 packs. Fourseasons was 175$ a week ago, outback arms had them but I didnt see the price...sad to say but other than saving the tax not many "deals" outback arms had a decent supply of 9mm 45 and tula x39. I didnt price it though. Went there to get a jug of powder.