I recently bought a roval sl8 handlebar copy on aliexpress. I get it for 100$ with all accessories included.
Quality is here, i just found the marks for hood position are not aligned but who really cares, screw for computer mount is to change if you want to have a good tightening without destroying it and interface between bar and mount is probably better made on the original too but it works.
About weight, it's light, mine is 325g for 400x100.
Rigidity is here on tops, i found hoods flex more than a alloy bar.
If you want to buy it, have in mind that exit hole is really small for 4 cables, i think like the original, it's made for electronic shifting.
Beware of the shape that is flat and wide on the top if you like this hand position.
I bought it on"hyyd sporting goods Store" which seems to have the lowest price with plenty of dimensions available.