Need long, rainbow wig. Can't find online. Help?

So I need a rainbow wig for a cosplay of Eyala from Wandersong. Now, I don't expect the wig to be quite as long as it is on the character, but I'm hoping for a colour scheme like in the picture, (not mine, I ripped it from google for the sake of having an example) but at least 80cm long (longer is preferred). I just can't seem to find what I'm looking for, even though I've been searching for over an hour. Maybe I missed something? I don't know. Either way, I figured someone over here could help me out! I don't care about the price.