Gladiator.tf:

1st month: https://gladiator.tf/sales?item=%2772%20Taunt:%20Flippin%27%20Awesome&at=2021-12-27T16:57:46.231Z

Sales:

1 @ 5 keys 36 ref ~5.5 keys

1 @ 5 keys 39.88 ref ~5.5 keys

Buys:

1 @ 5 keys 15.66 ref ~5 keys

1 @ 5 keys 19.88 ref ~5.5 keys

2nd month: https://gladiator.tf/sales?item=%2772%20Taunt:%20Flippin%27%20Awesome&at=2021-11-27T16:57:46.231Z

Buys:

1 @ 5 keys 18.77 ref ~5.5 keys

3rd month: https://gladiator.tf/sales?item=%2772%20Taunt:%20Flippin%27%20Awesome&at=2021-10-27T16:57:46.231Z

Sales:

1 @ 5 keys 48 ref ~5.5 keys

1 @ 5 keys 49 ref ~5.5 keys

1 @ 5 keys 54 ref ~6 keys

1 @ 5 keys 55.22 ref ~6 keys

1 @ 5 keys 55.55 ref ~6 keys

Buys:

2 @ 5 keys 28 ref ~5.5 keys

1 @ 5 keys 28.22 ref ~5.5 keys

1 @ 5 keys 28.55 ref ~5.5 keys

1 @ 5 keys 32.44 ref ~5.5 keys

~~

https://marketplace.tf/items/tf2/1107;5;u3004

$10.5 / $1.83 = 5.74 keys ~5.5 keys

$11.39 / $1.84 = 6.19 keys ~6 keys

$11.99 / $1.86 = 6.45 keys ~6.5 keys

$11.99 / $1.84 = 6.52 keys ~6.5 keys

~~

https://mannco.store/item/6886 nothing in-date

Sales at 5, 5.5 (x12), 6 (x4), 6.5 (x2)

https://gladiator.tf/listings/61c9ef7d7494cd47a95b2e3d young seller at 5.49, rest at 6 but some have been there for months. Buyers up to 5.26-5.3 keys

The sales at 6.5 look like outliers here and 5 looks low. Going with 5.5-6 keys here