Snagging third place on the Christmas Event 2022 Tokens-Collected leaderboard was the only way to get this gun. It is a leaderboard trophy, and very few exist, so its price gets worked out in private deals rather than posted anywhere. If you were not on that leaderboard, there is no way to obtain it now. In trades it rarely comes up, and owners do not part with it quickly.
Questions players ask
How much is Bronze Icepiercer worth?
There is no stable price: trophies rarely change hands and deals happen privately. The number on value lists is symbolic.
Can you still get Bronze Icepiercer?
No. It was awarded for a leaderboard place in an event and is not given out again.