I don't do this a ton, so let me know if I messed this up at all. This guy is 1/1 so it should be easier?

very cool compare:

https://next.backpack.tf/profiles/76561199485225128/compare?from=1759622400&to=1759708800

https://imgur.com/a/2pGBHvj

It shows 487k + some spelled nonsense for Chiroptera Venenata Old Guadalajara.

According to screenshots, they agreed on 500 keys. I assume 13 keys just got lost to the void, but I'll include the 13 in the "high" and ignore them for the "low"

On to the spelled nonsense:

Festive Backburner - Yay postlife!!! The screenshots don't have a truly agreed upon valuation and b/o don't help. Felderanto bought it for 60 (see imgur), and tried to value it at 50. Sadly, there aren't really sell / buy orders for an exo single spelled unique festive backburner. However, 50 keys for a festive postlife is significantly below current comparable sell orders and and comparable to B/O on other weapons from that event. For instance, Exo Festive Shotguns are at 95 S/O and 51 B/O while non-spelled variants are valued lower than non-spelled festive backburners. 50 should be a fair price given the past sale, but ill price it at non-spelled prof festive backburner for the low (3.34).

Bubbling Old Guadalajara - Agreed on at 35 which makes this WAY easier. B/O don't help at all lol. Last sale of it was to Feld at 50 keys (https://next.backpack.tf/profiles/76561198143864870/compare?from=1746230400&to=1748476800) and thank god it is the only Sinister Bubbling Old Guadalajara. Additionally, the only other bubbling pyro hat on market with sinister is a Bubbling Napper's Respite listed for 70 keys (see imgur link). Although the nappers is valued a little higher (12 keys compared to the OG at 10 keys), I would say it is similar enough to establish a trend. 35 seems fair as 1) it was agreed upon by both parties 2) it was LOWER than the last sale and 3) similar hats go for even more.

Electrostatic Tyrantium helmet - 1/2 and the only spelled one. They agreed on a valuation of 250, but feld paid only 100 for it less than a month ago (https://next.backpack.tf/profiles/76561198157964204/compare?from=1759104000&to=1759276800). The sale before that (https://next.backpack.tf/profiles/76561198157964204/compare?from=1719446400&to=1719532800) was SUPER mixed and would be hard to break down values for since it was 2 spelled items vs a priced unusual. I would argue without personal text logs that trade is basically unusable (and is also a year old). I'm gonna list 250 in the high, 100 in the low as that one has an actual pure sale in the past month.

Low: 487 + 3.34 + 35 + 100 = 625.34

High: 500 + 50 + 35 + 250 = 835

Yes its a huge range we love spelled item trades!!!!