You could get a 250g Jones H-Bar Loop carbon for $275 and bolt on some 110g Rose Spirgrips bar extensions for $80 or $90 shipped, and save even more weight (349g) for only $355. That’s only about $1 per gram saved…pretty good.
Jones do the H Loop in Ti, but as to be expected cost and weight go up.
https://jonesbikes.com/jones-h-bar-loop-carbon-31-8mm/
https://www.rosebikes.com/spirgripsr...r-ends-2667879