Item 1

https://backpack.tf/item/7957384260

Sale 1

2022-07-18 - 2022-07-19

Buyer - https://backpack.tf/profiles/76561198115458307#!/compare/1658102400/1658188800

Seller - https://backpack.tf/profiles/76561199072654974#!/compare/1658016000/1658102400

Listings (Bot name 2ScrapyardBot⚡️24/7)

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Dr%27s+Dapper+Topper&at=2022-07-18T09%3A21%3A00.000Z

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Dr%27s+Dapper+Topper&at=2022-07-19T10%3A51%3A00.000Z

At 59 keys 59.77 ref

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Item 2

https://backpack.tf/item/7956199357

Sale 2

2022-06-23 - 2022-06-24

Buyer - https://backpack.tf/profiles/76561197970814028#!/compare/1624320000/1656028800

Seller - https://backpack.tf/profiles/76561199127360020#!/compare/1655942400/1656028800

Untraceable

Listings (bot name ⚡Asuka 24/7⚡)

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Dr%27s+Dapper+Topper&at=2022-06-23T15%3A41%3A00.000Z

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Dr%27s+Dapper+Topper&at=2022-06-24T11%3A00%3A00.000Z

At 67 keys

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Item 3

https://backpack.tf/item/8541302656

Sale 3

2022-07-30 - 2022-07-31

https://i.imgur.com/rw6QHff.png

https://i.imgur.com/i3RN1wO.png

Listings (bot name ⚡The Rock Bot⚡)

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Dr%27s+Dapper+Topper&at=2022-07-30T13%3A06%3A00.000Z

https://gladiator.tf/time-machine?item=Disco+Beat+Down+Dr%27s+Dapper+Topper&at=2022-07-31T09%3A52%3A00.000Z

At 59 keys 57.44 ref

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Gladiator.tf

Past 30 days

1 @ 59 keys 57.44 ref

https://gladiator.tf/sales?item=Disco%20Beat%20Down%20Dr%27s%20Dapper%20Topper&at=2022-08-17T00:17:21.902Z

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Marketplace.tf

1 @ 129.99$ 16-08-2022 (129.99/1.89 = 68,77 keys)

1 @ 129.99$ 07-05-2022 (129.99/1.77 = 73.44 keys) (older, speculative)

Key prices

https://marketplace.tf/items/tf2/5021;6

https://manic.tf/keyprice/?at=2022-05-07&site=marketplace.tf

Listings

https://marketplace.tf/items/tf2/252;5;u62

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Conclusion

Given the relatively high value retained on mp.tf, and its volatile value history,

I think it's safe to set it to about 60-69 range at this current moment in time.

This is an update of the previous suggestion, adding another sale and marketplace.tf sale that happened yesterday (16-08-2022 at 129.99)