This legendary gun came from the 19th tier of Team Rewards during the 2022 Halloween Event, and that event is long over, so trading is the only way to get it now. No value history is recorded, so expect it to move slowly rather than swing. Aurora (2021) and Batwing sit in similar value territory if you're comparing.
Vampire (2022) is a Legendary gun in Murder Mystery 2. Its combined value is 42.5, #6 of 89 legendary items and #200 of 921 valued items overall. Demand is low: it sits in inventories for a while, and buyers often ask for a discount.
Closest in value: Aurora (2021) (42.5), Batwing (43.5), Chroma Candleflame (40). Use them as a benchmark for a fair one-for-one trade.
Value history
What it is worth in other items
1×Aurora (2021)
1 : 1Batwing
1.1×Chroma Candleflame
1.1×Chroma Laser
1.1×Santa (2019)
1.1×Elderwood Scythe
1.1×Swirly Axe
1.1×Frosted (2019)How many of each item equal one Vampire (2022) by value. Demand differs between items, so check it before you trade.