Yesss, that's the best offer in that weight and longer for sure, good find.

Many china wig is under 400gr even for 1,50m, I have some, but with the link of Sonic I found that one too:

aliexpress.com/item/32810273846.html?spm=2114.12010612.8148356.2.445b2235lK3Nr5

The longer and the weight, 700gr!!!. But you're problem after to brush, it's very long I can say...