Back when I was after wider reasonably priced bars for my DH bike I picked up a set of Syncros Bulk 2014 off TBSM for $80, they were 20mm rise, 710 wide, and weigh close to 400g......but Syncros has replaced them with a new model....
FR 2014 710 wide, 20mm rise and 9 sweep....315g
or you have
Syncros FR31, 20mm rise 9deg sweep 790 width, weight not stated
People probably don't like the Syncros brand much because it was specced OEM on Norco bikes. To me they feel as good as the Deity 2014's I have and much better than some others I've had like Hussefelt, Race Face Ride, even Easton EA30 etc
If you're looking at CRC and TBSM then Holzefellors, Funn Fatboys, Sunline V1/ V2 etc would probably come into your price bracket (if on sale at least).
But my pick of the bunch would probably be the Answer ProTaper 780 DH Bar......cheaper than I expected!
CRC Answer ProTaber DH
Stated weight is 335g in the Dirt Works catalogue.