Sale 1:

https://backpack.tf/profiles/76561198802465612#!/compare/1564272000/1564358400

https://backpack.tf/profiles/76561198158189736#!/compare/1564358400/1564963200

Sold for 7 keys

sale 2:

https://backpack.tf/profiles/76561198094890561#!/compare/1565136000/1568764800

https://backpack.tf/profiles/76561198819895048#!/compare/1566345600/1567900800

SCM

Sale 3:

https://backpack.tf/profiles/76561198819895048#!/compare/1568419200/1568592000

https://backpack.tf/profiles/76561198838447026#!/compare/1568332800/1568419200

QS

sale 4:

https://backpack.tf/profiles/76561198838447026#!/compare/1568678400/1568764800

https://backpack.tf/profiles/76561198147144167#!/compare/1568678400/1568764800

Keys

Sale 5:

https://backpack.tf/profiles/76561198093010152#!/compare/1564790400/1564963200

https://backpack.tf/profiles/76561198108797381#!/compare/1564704000/1564790400

Untrace

sale 6:

https://backpack.tf/profiles/76561198108797381#!/compare/1564963200/1565049600

https://backpack.tf/profiles/76561198081907770#!/compare/1564876800/1564963200

Sold for 6 keys

sale 7:

https://backpack.tf/profiles/76561198081907770#!/compare/1565222400/1565308800

https://backpack.tf/profiles/76561198334598690#!/compare/1565222400/1565308800

Untrace

Sale 8:

https://backpack.tf/profiles/76561198334598690#!/compare/1565395200/1565481600

https://backpack.tf/profiles/76561198231266680#!/compare/1565481600/1565568000

Untrace

Sale 9:

https://backpack.tf/profiles/76561198231266680#!/compare/1566864000/1566950400

https://backpack.tf/profiles/76561198034268412#!/compare/1566777600/1566950400

Sold for 7 keys

Sale 10:

https://backpack.tf/profiles/76561198340634356#!/compare/1564099200/1564185600

https://backpack.tf/profiles/76561198338199023#!/compare/1564185600/1564272000

Keys

sale 11:

https://backpack.tf/profiles/76561198085952469#!/compare/1566086400/1566259200

https://backpack.tf/profiles/76561198392689265#!/compare/1566259200/1566345600

Bulky

sale 12:

https://backpack.tf/profiles/76561198345415891#!/compare/1565222400/1565308800

https://backpack.tf/profiles/76561198880281227#!/compare/1565827200/1565913600

https://backpack.tf/profiles/76561198214611664#!/compare/1567123200/1568073600

not unusual

Sale 13:

https://backpack.tf/profiles/76561198054481533#!/compare/1566000000/1567555200

https://backpack.tf/profiles/76561198975705652#!/compare/1565913600/1566432000

https://backpack.tf/profiles/76561198975705652#!/compare/1566432000/1566518400

https://backpack.tf/profiles/76561198182877845#!/compare/1566432000/1567641600

Untrace

Sale 14:

https://backpack.tf/profiles/76561198088742736#!/compare/1565568000/1565654400

https://backpack.tf/profiles/76561198322829814#!/compare/1565395200/1565827200

Sold for 7 keys

sale 15:

https://backpack.tf/profiles/76561198969469045#!/compare/1565395200/1567728000

https://backpack.tf/profiles/76561198178042934#!/compare/1565913600/1566000000

Untrace

Sale 16:

https://backpack.tf/profiles/76561198178042934#!/compare/1566086400/1566518400

https://backpack.tf/profiles/76561198329547610#!/compare/1566259200/1567209600

Untrace

sale 17:

https://backpack.tf/profiles/76561198841279602#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198150034148#!/compare/1567036800/1567209600

Sold for ~8 keys

Sale 18:

https://backpack.tf/profiles/76561198097271466#!/compare/1564444800/1564531200

https://backpack.tf/profiles/76561198411423518#!/compare/1519257600/1564617600

Can trace 2 keys

Sale 19:

https://backpack.tf/profiles/76561198411423518#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198124581862#!/compare/1565913600/1566000000

Bulk

sale 20:

https://backpack.tf/profiles/76561198124581862#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198235240668#!/compare/1566086400/1566172800

Sold for 7 keys

Sale 21:

https://backpack.tf/profiles/76561198062615362#!/compare/1564358400/1564444800

https://backpack.tf/profiles/76561198800376958#!/compare/1564272000/1564444800

Bulk

Sale 22:

https://backpack.tf/profiles/76561198800376958#!/compare/1565049600/1565222400

https://backpack.tf/profiles/76561198134639701#!/compare/1564790400/1565308800

Sold for 7 keys

Sale 23:

https://backpack.tf/profiles/76561198134639701#!/compare/1566000000/1566259200

https://backpack.tf/profiles/76561198452942676#!/compare/1558051200/1566950400

Untrace

Sale 24:

https://backpack.tf/profiles/76561198453530349#!/compare/1563840000/1563926400

https://backpack.tf/profiles/76561198335791307#!/compare/1563840000/1563926400

Can trace ~3.5 keys

Sale 25:

https://backpack.tf/profiles/76561198335791307#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198049787869#!/compare/1566777600/1567123200

Untrace

sale 26 - 37:

https://marketplace.tf/items/tf2/1106;5;u3003

$15 / $1.83 = 8.20 keys

$15 / $1.83 = 8.20 keys

$9 / $1.84 = 4.89 keys

$15 / $1.84 = 8.15 keys

$15 / $1.82 = 8.24 keys

$15 / $1.83 = 8.20 keys

$15.89 / $1.81 = 8.78 keys

$10.1 / $1.84 = 5.49 keys

$15.89 / $1.82 = 8.73 keys <-- https://backpack.tf/item/6911634265

$15.89 / $1.83 = 8.68 keys <-- https://backpack.tf/item/3847948829

$22.5 / $1.83 = 12.30 keys

$10.9 / $1.81 = 6.02 keys

Bot.tf:

https://bot.tf/stats/item?def=1106&q=5&ef=Holy%20Grail&craft=1&aus=0&ks=0&source=browser_script

1 sale @ 5 keys,

2 sales @ ~5.5 keys,

1 sale @~6 keys,

5 sales @ ~7 keys,

1 sale @ ~8 keys

Total sales @:

4.9

5

5.5 (x3)

6 (x2)

7 (x10)

8 (x7)

8.5 (x2)

9 (x2)

12.5

3 month unsold at 8 keys,

https://bot.tf/stats/listings/ML53LJO4

buyers up to ~6 keys,

taking 7 - 8 keys