buying ultramarine please help looking ages for one

I wanna buy a ultramarine il give 4k please if anyone has one..

Have you tried asking the people who have the tracked ones on the wiki?
https://habboxwiki.com/Ultramarine

Obv theres more than just the ones noted there. Someone deleted some names a while back. Like you ive always wanted one and was fortunate enough to get one a few years back for cheap. Hopefully you'll get one soon though. Your best bet is probably joining one of the habbo discords. i think HTF used to have an active trade discord. Not sure though