I just remembered something that is the sob story of the century.
When I was a kid, me and my brother had a big collection of both regular Lego and Bionicle. I had Brutaka as a set, and like many of us, he was my favorite. One time I had a friend over, and he had Irnakk at home. I brought up the theoretical idea that if we could combine some piees, we could make a almost entirely golden Piraka. You could tell that he was really excited about this. Sometime later two of the golden Piraka thigh covers dissapeared from my Brutaka. I didn't think much about it, just thought they may be somewhere in our pile of pieces.
Likewise, me and my brother had a golden Vahi. It also disappeared. I checked BrickLink today, and saw what that mask costs. It is quite a hefty price, as you might know. I wish I knew what BrickLink was back then. Because then I could have fact-checked if my friend was telling me the truth when he suddenly had two golden Piraka thigh covers, and a golden Vahi. He claimed he got the thigh covers from a comic or something like that. The same story for the Vahi. Would have been so easy to just go on BrickLink, check if there is any record of those pieces appearing in that way (there isn't), and call out my friend on his lies.
I want my Vahi back. But I'm not gonna pay the price it is on BrickLink right now. Rant concluded.