Past 30 days

Gladiator.tf : https://gladiator.tf/sales?item=Non-Craftable%20Unusual%20Taunt:%20Disco%20Fever%20Unusualifier

Nothing

SCM : https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Disco%20Fever%20Unusualifier (prices in €)

Jan 3: 4.22/1.88=2.24 ~2.25 keys

Jan 4 : 4.22/1.89=2.23 ~2.25 keys

Jan 4 : 3.57/1.89=1.89 ~1.9 keys

Jan 4 : 4.24/1.89=2.24 ~2.25 keys

Jan 4 : 3.58/1.89=1.9 keys

Jan 5 : 4.26/1.88=2.26 ~2.25 keys

Jan 5 : 2.54/1.88=1.35 keys

Jan 8 : 3.9/1.89=2.06 ~2.05 keys

Jan 10 : 4/1.91=2.1 keys (x2)

Jan 15 : 4.13/1.93=2.14 ~2.15 keys (x2)

Jan 15 : 3.59/1.93=1.86 ~1.85 keys

Jan 16 : 4.29/1.94=2.21 ~2.2 keys

Jan 20 : 3.78/1.94=1.95 keys

Jan 22 : 4.61=1.93=2.38 ~2.4 keys

Jan 23 : 3.4/1.93=1.77 ~1.75 keys

Jan 24 : 3.39/1.93=1.75 keys

Jan 28 : 3.67/1.96=1.87 ~1.85 keys

Jan 30 : 3.79/1.95=1.94 ~1.95 keys

Jan 31 : 3.78/1.96=1.93 ~1.95 keys

Feb 1 : 3.79/1.97=1.92 ~1.9 keys

Feb 1 : 3.83/1.97=1.94 ~1.95 keys

Feb 2 : 3.65/1.96=1.86 ~1.85 keys

Feb 3 : 3.84/1.95=1.97 ~1.95 keys

MPTF : https://marketplace.tf/items/tf2/9258;5;uncraftable;td-1119 (in $)

Jan 3: 7.9/1.85=4.27 ~4.25 keys (x4)

Jan 3: 8/1.85=4.32 ~4.3 keys (x2)

Sales:

1.75, 1.85 (x2), 1.9 (x2), 1.95 (x4), 2.05, 2.15 (x2), 2.2, 2.25 (x4), 2.4, 4.25 (x4), 4.3 (x2)

Classies :

BPTF - https://imgur.com/tgpan38 Sellers at ~2.95-3 keys, buyers up to ~1.55 keys

MPTF - https://marketplace.tf/items/tf2/9258;5;uncraftable;td-1119 none

STN - can't find the page

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Deep%20Fried%20Desire%20Unusualifier seller at 3.61€ (~1.85 keys) and 6.27-6.28€ (~3.2 keys), buyers up to 3.12€ (~1.6 keys)

4.25-4.3 is definitely too high despite the volume of sales. There are too many available under 3 keys to justify including them in the range. Nothing counters 1.75 so using that as the low end. 2.4 is probably a bit high too but keeping 2.25 in the range since there are 4 sales at that value. A single seller at 1.85 isn't enough to counter lots of sales.

Going with 1.75-2.25 keys