Where can i buy the old, Lego compatible, Hazel Fantasy Armor? Or old Halo armors in general?

I'm an aspiring lego modeler, and i'm looking to purchase the old halo armors produced by amazing armory, united armory, pevocam, pedro-79 ect. I'm very well aware that they are no longer in business. But i'm looking for any way to get my hands on their old products! If anyone has any info on this, Please leave an answer! thanks you guys!