It came from the 2020 Christmas Box, and since that event ended it can no longer be unboxed — only traded for. Collectors pick it up mostly for the 2020 Christmas Event tie-in; if you want one, expect to wait for a seller rather than find a queue of buyers.
Icecracker is a Legendary knife in Murder Mystery 2. Its combined value is 1.5, #39 of 89 legendary items and #543 of 921 valued items overall. Demand is low: it sits in inventories for a while, and buyers often ask for a discount. The value went up 50% over the last 7 days.
Closest in value: Aurora (2019) (1.5), Ghost (2018) (1.5), Lights (2019) (1.5). Use them as a benchmark for a fair one-for-one trade.
Value history
What it is worth in other items
1×Aurora (2019)
1×Ghost (2018)
1×Lights (2019)
1×Moonlight
1×Mystery Key
1×Red Fire
1×Vampire (2016)
1×Vampire (2018)How many of each item equal one Icecracker by value. Demand differs between items, so check it before you trade.