Re-suggesting, new sales.

Sale 1:

Sold for 12 keys

https://backpack.tf/profiles/76561198127452491#!/compare/1706486400/1706659200

https://backpack.tf/profiles/76561198104991389#!/compare/1706400000/1706486400

https://backpack.tf/item/9923569888

https://imgur.com/a/CKoUxWH - B/O of 12

= 12 keys

Sale 2:

Sold for 11 keys?

https://backpack.tf/profiles/76561199220022021#!/compare/1707004800/1707091200

https://backpack.tf/profiles/76561198120107112#!/compare/1707004800/1707091200

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20Rancho%20Relaxo - labelled as 13 keys?

https://backpack.tf/item/3467789492

Only 11 keys show up on either end. Unless I get more proof that his was 13, this sale will be counted as 11.

https://backpack.tf/item/4475971644 - gambled

Sale 3:

Sold for 11 keys

https://backpack.tf/profiles/76561199072654974#!/compare/1703203200/1703289600

https://backpack.tf/profiles/76561198064432702#!/compare/1703289600/1703376000

https://backpack.tf/item/2778530984

https://next.backpack.tf/classifieds/snapshots/Holy%20Grail%20Taunt:%20Rancho%20Relaxo/65860f2b6c37ec5ec90084a3 Bit odd that it sold for 11 when listed for 10.2. Gonna give it the benefit of the doubt.

https://imgur.com/a/ZpOvbEj

= 11 keys

Sale 4:

Sold with a bunch of other taunts for keys.

https://backpack.tf/profiles/76561199110809353#!/compare/1705104000/1705190400

https://backpack.tf/profiles/76561199091010215#!/compare/1705190400/1705276800

https://backpack.tf/item/10007469198

https://imgur.com/a/4u2LwI0 - B/O of 11

The seller was selling for 11 keys, should be safe to assume it went for the agreed price, along with others for their prices. Counting this sale as 11.

Gambled afterwards.

= 11 keys

Sale 5:

Sold to a bot for 10 keys + less than half a key in metal

https://backpack.tf/profiles/76561199005234253#!/compare/1705708800/1705795200 - Near ID: 14074868142

https://backpack.tf/profiles/76561199043177646#!/compare/1705708800/1705795200

https://backpack.tf/item/6262196218

= 10 keys

Sale 6:

Sold for 10 keys

https://backpack.tf/profiles/76561198311498888#!/compare/1703030400/1703116800

https://backpack.tf/profiles/76561198097232731#!/compare/1703116800/1703203200

https://backpack.tf/item/12001870511

= 10 keys

Sale 7:

Sold for 10 keys

https://backpack.tf/profiles/76561198453530349#!/compare/1703376000/1703462400

https://backpack.tf/profiles/76561198160355178#!/compare/1703376000/1703462400

https://backpack.tf/item/12001870511

Looking at the buyer's backpack, you'd think the buyer sold the Strange Detonator for a key and metal, and used the key to add to their trade, making the trade 10 keys. However, looking at the snapshot history for the item, we can see it was listed for 10.2 keys.

https://next.backpack.tf/classifieds/snapshots/Holy%20Grail%20Taunt:%20Rancho%20Relaxo/6588d14fae6bfda02f081aa9

https://imgur.com/a/cTacs56

If anything, some metal from the detonator was used. Regardless, this would round to 10 keys.

= 10 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199124536958#!/compare/1701043200/1701216000

https://backpack.tf/profiles/76561199564942025#!/compare/1700956800/1701043200

https://backpack.tf/item/12001870511

Untraceable.

#2

https://backpack.tf/profiles/76561198097232731#!/compare/1703116800/1703203200

https://backpack.tf/profiles/76561198453530349#!/compare/1703116800/1703203200

https://backpack.tf/item/12001870511

Untraceable.

#3

https://backpack.tf/profiles/76561198109872491#!/compare/1701388800/1701475200

https://backpack.tf/profiles/76561198850121720#!/compare/1701302400/1701388800

https://backpack.tf/item/10007469198

Untraceable. Sales prior to this were gambled.

#4

https://backpack.tf/profiles/76561198286021479#!/compare/1699833600/1699920000

https://backpack.tf/profiles/76561199072654974#!/compare/1699833600/1699920000

https://backpack.tf/item/8637271683

Untraceable. Some metal matches.

#5

https://backpack.tf/profiles/76561199072654974#!/compare/1700524800/1700611200

https://backpack.tf/profiles/76561198112088229#!/compare/1700524800/1700611200

https://backpack.tf/item/8637271683

Untraceable.

#6

https://backpack.tf/profiles/76561198202572818#!/compare/1698969600/1699142400

https://backpack.tf/profiles/76561198850274253#!/compare/1699056000/1699142400

https://backpack.tf/item/7273261122

Untraceable.

#7

https://backpack.tf/profiles/76561198850274253#!/compare/1699056000/1699142400

https://backpack.tf/profiles/76561199245733895#!/compare/1699056000/1699142400

https://backpack.tf/item/7273261122

Untraceable.

#8

https://backpack.tf/profiles/76561199161916038#!/compare/1699747200/1699833600

https://backpack.tf/profiles/76561198311498888#!/compare/1699747200/1699833600

https://backpack.tf/item/7273261122

Untraceable. Gambled prior.

#9

https://backpack.tf/profiles/76561198121444172#!/compare/1703635200/1703721600

https://backpack.tf/profiles/76561199026390261#!/compare/1703635200/1703721600

https://backpack.tf/item/4481406075

Untraceable.

#10

https://backpack.tf/profiles/76561199026390261#!/compare/1703980800/1704067200

https://backpack.tf/profiles/76561198183165447#!/compare/1703980800/1704067200

https://backpack.tf/item/4481406075

Sold for 12 keys? (buyer's end)

Kinda doubtful of this, considering there was a bot selling for 11 keys at the time of the sale. Even if it's correct, it should fit in the range.

#11

https://backpack.tf/profiles/76561198006182258#!/compare/1704153600/1704240000

https://backpack.tf/profiles/76561199232894935#!/compare/1704067200/1704153600

https://backpack.tf/item/6971546342

Untraceable. Was listed at 10.

https://imgur.com/a/7Wy1mSl

#12

https://backpack.tf/profiles/76561199232894935#!/compare/1704672000/1704844800

https://backpack.tf/profiles/76561197982127154#!/compare/1704758400/1704844800

https://backpack.tf/item/6971546342

Backpack buy

#13

https://backpack.tf/profiles/76561198144346135#!/compare/1706140800/1706227200

https://backpack.tf/profiles/76561199116198115#!/compare/1706140800/1706227200

https://gladiator.tf/sales?item=Holy%20Grail%20Taunt:%20Rancho%20Relaxo - labelled as 10 keys + 25.66 ref

https://backpack.tf/item/8373566214

Untraceable, some keys and metal match.

#14

https://backpack.tf/profiles/76561198115689569#!/compare/1705968000/1706140800

https://backpack.tf/profiles/76561199220022021#!/compare/1705881600/1705968000

https://backpack.tf/item/3467789492

Untraceable/bulk/item transfer to bot

#15

https://backpack.tf/profiles/76561198104991389#!/compare/1706313600/1706400000

https://backpack.tf/profiles/76561198013100259#!/compare/1691107200/1706400000

https://backpack.tf/item/2790844002

Bulk for Scorching White Russian?

https://backpack.tf/item/7388943787 - Bot transfer.

https://backpack.tf/item/5632503507 - Bot transfer.

https://backpack.tf/item/2760957533 - wasn't unusual.

Marketplace Sales:

https://marketplace.tf/items/tf2/1115;5;u3003

$31.99 on December 26th, Jan 23rd, Jan 24th, and Jan 30th.

These sales would end up being around 19 keys, which is significantly higher than sellers. Excluding.

Sellers/Buyers:

https://imgur.com/a/Ms2hz89

https://backpack.tf/item/6262196218 - ~13.9 keys

https://backpack.tf/item/12748752739 - 15 keys

https://backpack.tf/item/8373566214 - marketplace

The last one in the screenshot already sold.

Sales at:

10 (3x)

11 (3x)

12

Sales at 10 are too common to be excluded, despite buyers. The buyers also appeared after my last suggestion. Keeping 10 in the range.

Taking 10-12.