Nova value

Right now Nova goes for about 0.024. That is 112th of 128 priced rare items, and 779th of 1,033 items overall. Set it against the median rare of 0.16 and it comes out 85% less than that. Top of the tier is Cane Knife at 525, about 21,900 times what you have here. This is bundle-tier. You will see it priced as 3 X (T1) Uncommon rather than by itself.

The source rates its demand at 2/10. 12 rare items rate higher and 32 rate lower.

If you are putting an offer together, 3x Coal Gun 2022 (0.008 each), or 3x Candied Knife (0.008 each), or 8x Stickers Xmas 24 (0.003 each) all come out about even. On the list it sits between Vortex (0.024) and Hacker (0.024). Those are the two swaps people reach for when they do not have this one.

Rares come out of the standard boxes constantly, so supply is huge and values are tiny. Most of the tier is under 1. The odd exception, like Dungeon, sits way above the rest and is really its own thing.

Treat rares as small change. Filler that rounds a trade off, not something you build around. If a trade needs more than a couple of rares to balance, the trade is kinda not balanced. Add a legend instead.