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Building off of the previous suggestion - but providing evidence! I don't have access to look at history of all the specs in existence so I'm going off the one I know exists.
Item 1: https://backpack.tf/item/8605614068
Trade 1: https://backpack.tf/profiles/76561198316130764#!/compare/1686700800/1686873600
Between 2023/06/14 and 2023/06/16, these specs were traded for:
- Starstorm Slumber Pickel (outdated price of 16, buyorders were@20, sellorders were@40(current owner of specs))
- MG hot dogger (outdated price of 86-89, buyorders were@73.35(gladiator bot), sellorders were@135(current owner of specs))
[edit looking at classifieds snapshots, the trade must have took place 2023/06/16 b/c current owner of spooks had listing up on 06/16.]
This gives a lower bound of 93.35 and an upper of 175. It is likely the previous suggester, who is the former owner in this trade, thought the actual value of the trade was 155. They were also willing to provide a lower range when making their suggestion (https://backpack.tf/suggestion/64884a37157e1b729d0e5381) after the trade.
Arithmetic mean of bounds gives 134.2 keys - so I'll give a range from 130-155 based on numeric info from the trade and info gleaned from the suggestion made around the same time.
If someone with more access can find more item histories for the specs, including older sales between 6mo ago and the 2nd most recent suggestion 3yrs ago for additional context, please help me update my suggestion. ty
You would have to find more sales for both the hats you listed:
https://backpack.tf/stats/Unusual/Hot%20Dogger/Tradable/Craftable/89
https://backpack.tf/stats/Unusual/Platinum%20Pickelhaube/Tradable/Craftable/110
You also shouldn't range based off one sale.
More sales here though:
Item 1
https://backpack.tf/item/8605614068
Sale 1
https://backpack.tf/profiles/76561199111073161#!/compare/1686528000/1686614400
https://backpack.tf/profiles/76561198316130764#!/compare/1686182400/1686614400
14 keys match ID
The histories of:
Morning Glory Handyman's Handle
Vicious Circle Highway Star
Max's Severed Head
Stormy Storm Neckwear Headwear
Strange Killstreak Festive Flare Gun
Strange Bushman's Bristles
Strange Professional Killstreak Australium Axtinguisher
all match going from Piter Pałka Jebałka to Harry qs.store bot.
The way qs.store works is that the items are valued at buyers more or less at the time since qs.store is a trade site.
This typically leads to sales capping at the pure buyout at the time which in this case is a little hard to find due to gladiator.tf snapshots becoming redundant.
This sale will be hard to use.
Sale 2
https://backpack.tf/profiles/76561198316130764#!/compare/1686700800/1686873600
https://backpack.tf/profiles/76561198074019114#!/compare/1686787200/1686873600
Both compare links for the sale you provided. You will have to find minis for that as said above.
Honestly, given that the Slumber Pickel got dumped to a bot I'm not sure if it will be that high of a sale - https://backpack.tf/item/5189891072
Item histories for Hot Dogger:
https://backpack.tf/item/10442888761
https://backpack.tf/item/3570424305
Item 2
https://backpack.tf/item/12368492656
Sale 3
https://backpack.tf/profiles/76561198188639765#!/compare/1682899200/1683072000
https://backpack.tf/profiles/76561198867208675#!/compare/1682899200/1682985600
135 keys pure
Sale 4
https://backpack.tf/profiles/76561198867208675#!/compare/1683676800/1683849600
https://backpack.tf/profiles/76561198107249245#!/compare/1683763200/1683849600
132 keys match? You might have to add but purely based off the compare links it looks like 132 keys flat which is a bit weird.
Conclusion
Sale 1 is unusable
Sale 2 requires minis
You can then range this from whatever value Sale 2 comes out to - 135 and this will then be fine.
Don't know how you got those numbers specifically for sale 3 & 4, but helpful nonetheless. Teach me your wizardry :D
I started the minis by listing highest buy orders and lowest sell orders on the date of sale - but you're right that I should've done more work on that. I'll look into it and re-suggest with findings.
That said, it looks like the 134.2 I got from the mean was a very good guess based on 3 and 4.
https://forums.backpack.tf/topic/79020-guide-how-to-make-an-unusual-price-suggestion-2021-edition/
Here's a guide I wrote back in 2021. Not much has changed aside from the parts relevant to gladiator.tf
It will explain your first question.
As for minis, highest buy order and lowest sell order doesn't really show much. You sort of lucked out on your "mean" being a good guess this time round.
Good luck in remaking the suggestion
I'm going to close this suggestion and after trying my hands at the minis I'll remake the suggestion. Thanks for the help! The pickel and hot dogger hists will be very useful.