Sale 1:

https://backpack.tf/profiles/76561198153779074#!/compare/1568764800/1571616000

https://backpack.tf/profiles/76561198363395191#!/compare/1571529600/1571616000

QS

sale 2:

https://backpack.tf/profiles/76561198363395191#!/compare/1571702400/1571788800

https://backpack.tf/profiles/76561198196259989#!/compare/1571961600/1572134400

SCM

Sale 3:

https://backpack.tf/profiles/76561198835528993#!/compare/1571356800/1571529600

https://backpack.tf/profiles/76561198173948611#!/compare/1570579200/1572912000

SCM

Sale 4:

https://backpack.tf/profiles/76561198363395191#!/compare/1567382400/1567468800

https://backpack.tf/profiles/76561198420097719#!/compare/1567468800/1567728000

Sold for 6 keys

Sale 5:

https://backpack.tf/profiles/76561198119225304#!/compare/1567296000/1567382400

https://backpack.tf/profiles/76561198281630040#!/compare/1567468800/1567555200

https://backpack.tf/profiles/76561198328624791#!/compare/1567468800/1567555200

untrace

sale 6:

https://backpack.tf/profiles/76561198328624791#!/compare/1569024000/1569628800

https://backpack.tf/profiles/76561198169327052#!/compare/1567036800/1569024000

untrace

Sale 7:

https://backpack.tf/profiles/76561198169327052#!/compare/1569456000/1569801600

https://backpack.tf/profiles/76561197998450640#!/compare/1568678400/1569628800

Untrace

sale 8:

https://backpack.tf/profiles/76561197998450640#!/compare/1569715200/1569974400

https://backpack.tf/profiles/76561198313052417#!/compare/1568764800/1570233600

untrace

sale 9:

https://backpack.tf/profiles/76561198950621219#!/compare/1572393600/1572480000

https://backpack.tf/profiles/76561198064458811#!/compare/1572307200/1572480000

untrace

Sale 10:

https://backpack.tf/profiles/76561198340634356#!/compare/1569974400/1570060800

https://backpack.tf/profiles/76561198130326648#!/compare/1569974400/1570060800

sold for 6 keys

sale 11:

https://backpack.tf/profiles/76561198130326648#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198454615761#!/compare/1570492800/1570579200

QS for ~5 keys

sale 12:

https://backpack.tf/profiles/76561198844183288#!/compare/1567641600/1567728000

https://backpack.tf/profiles/76561198097271466#!/compare/1567641600/1567728000

QS for 5 keys

Sale 13:

https://backpack.tf/profiles/76561198097271466#!/compare/1568073600/1568160000

https://backpack.tf/profiles/76561198191092825#!/compare/1568073600/1568160000

Sold for 6 keys

sale 14:

https://backpack.tf/profiles/76561198191092825#!/compare/1568246400/1568332800

https://backpack.tf/profiles/76561198378773484#!/compare/1568073600/1568332800

Untrace

sale 15:

https://backpack.tf/profiles/76561198166649901#!/compare/1567382400/1567468800

https://backpack.tf/profiles/76561198080179568#!/compare/1567382400/1567468800

QS

sale 16:

https://backpack.tf/profiles/76561198080179568#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198338193317#!/compare/1567900800/1568332800

Untrace

sale 17:

https://backpack.tf/profiles/76561198371850378#!/compare/1569110400/1569196800

https://backpack.tf/profiles/76561198078399939#!/compare/1570665600/1571011200

SCM

sale 18:

https://backpack.tf/profiles/76561198078399939#!/compare/1574035200/1574121600

https://backpack.tf/profiles/76561198131774728#!/compare/1574035200/1574121600

https://backpack.tf/profiles/76561198838447026#!/compare/1574035200/1574121600

untrace then QS

sale 19:

https://backpack.tf/profiles/76561198299677852#!/compare/1570406400/1570492800

https://backpack.tf/profiles/76561198389129235#!/compare/1570406400/1570579200

Bulky

sale 20:

https://backpack.tf/profiles/76561198389129235#!/compare/1572480000/1572566400

https://backpack.tf/profiles/76561198278481498#!/compare/1572566400/1572652800

Bulk

sale 21:

https://backpack.tf/profiles/76561198278481498#!/compare/1572652800/1572739200

https://backpack.tf/profiles/76561198093229501#!/compare/1572739200/1572825600

Untrace

sale 22:

https://backpack.tf/profiles/76561198093229501#!/compare/1572825600/1573084800

https://backpack.tf/profiles/76561198169444473#!/compare/1572739200/1572825600

Sold for ST Sorcery + ~0.5 keys in sweets

Sale 23:

https://backpack.tf/profiles/76561198169444473#!/compare/1573689600/1573862400

https://backpack.tf/profiles/76561198108828369#!/compare/1573862400/1574121600

Bulk

sale 24:

https://backpack.tf/item/6169719299

https://backpack.tf/profiles/76561198068935801#!/compare/1567728000/1568073600

not unusual till MPTF sale

Sale 25:

https://backpack.tf/profiles/76561198066180061#!/compare/1566691200/1567382400

https://backpack.tf/profiles/76561198266843889#!/compare/1566172800/1567555200

not unusual

sale 26:

https://backpack.tf/profiles/76561198237763370#!/compare/1570752000/1570924800

https://backpack.tf/profiles/76561198134238543#!/compare/1570838400/1570924800

Bulk

Sale 27:

https://backpack.tf/profiles/76561198134238543#!/compare/1570838400/1570924800

https://backpack.tf/profiles/76561198454615761#!/compare/1570838400/1570924800

QS

sale 28:

https://backpack.tf/profiles/76561198340634356#!/compare/1570320000/1570406400

https://backpack.tf/profiles/76561198015336018#!/compare/1570406400/1570924800

Sold for ~5 keys

sale 29:

https://backpack.tf/profiles/76561198152167623#!/compare/1567641600/1572825600

https://backpack.tf/profiles/76561198151501753#!/compare/1568332800/1571616000

Untrace

sale 30:

https://backpack.tf/profiles/76561198306436886#!/compare/1567555200/1569974400

https://backpack.tf/profiles/76561198156585731#!/compare/1567555200/1568937600

Untrace

Sale 31:

https://marketplace.tf/items/tf2/30621;5;u3003

$9.11 / $1.83 = 4.98 keys

$13.59 / $1.82 = 7.47 keys

$14.14 / $1.82 = 7.77 keys

$14.14 / $1.82 = 7.77 keys

$9.14 / $1.84 = 4.97 keys <--- https://backpack.tf/item/4256873644

$13.45 / $1.83 = 7.35 keys

$11 / $1.82 = 6.04 keys

$13 / $1.82 = 7.14 keys

$13 / $1.81 = 7.18 keys

$12 / $1.77 = 6.78 keys

Bot.tf:

https://bot.tf/stats/item?def=30621&q=5&ef=Holy%20Grail&craft=1&aus=0&ks=0&source=browser_script

3 sales @ ~6.45 keys,

1 sale @ ~6.4 keys,

1 sale @ ~6.35 keys

1 sale @ ~5.5 keys,

2 sales @ ~5.20 keys,

1 sale @ ~5.15 keys,

2 sales @ ~5.1 keys,

total sales @:

5 (x5)

5.5

6 (x4)

6.5 (x5)

7 (x3)

7.5 (x2)

8 (x2)

total sales @:

non strange buyers up to ~5.5 keys,

new seller for 6 keys,

sellers down to ~6.5 keys, unsold for a month,

dropped down from 7+ as well, unsold at higher for longer...

calling 5 low,

7.5 high,

taking 5.5 - 7 keys.