Firstly, you should show me the compares, and not just tell me.

Secondly:

https://backpack.tf/profiles/76561198108945842#!/compare/1596585600/1596672000

https://backpack.tf/profiles/76561198322957656#!/compare/1596585600/1596672000

Sold for ~79 keys

https://backpack.tf/profiles/76561198322957656#!/compare/1597017600/1597104000

https://backpack.tf/profiles/76561197999173629#!/compare/1597104000/1597190400

Sold for Warp Copper + eldritch Handcraft(35.5)

Copper has one other sale:

https://backpack.tf/profiles/76561198063104128#!/compare/1597104000/1597190400

https://backpack.tf/profiles/76561198322957656#!/compare/1597104000/1597190400

Sold for Phosphorous Modest

Modest sold for:

https://backpack.tf/profiles/76561198322957656#!/compare/1597104000/1597190400

https://backpack.tf/profiles/76561198203811797#!/compare/1597104000/1597190400

Beams Blast + 35 keys

https://backpack.tf/profiles/76561198203811797#!/compare/1597363200/1597449600

https://backpack.tf/profiles/76561198072355915#!/compare/1597363200/1597449600

Bulky / use there

A mini for the Blast is needed.

So there are other usable sales. While I can understand thinking that the Copper being unusuable, as the guy sold it presumably after you checked, missing the 79 key sale is inexcusable.

Thirdly,

https://bot.tf/stats/listings/429XO89Q

Beaser had a B/O of 100, so this would cap.

This will need to be resuggested with a range once the Beams Blast has a mini.