Refreshing after 6 months, interesting.

Sales

Sale 1: Sold for 70 keys

https://backpack.tf/profiles/76561198192602363#!/compare/1600992000/1601078400

https://bot.tf/stats/listings/4J5RR3L3

Sale 2: Untrace

https://backpack.tf/profiles/76561198377666841#!/compare/1597276800/1598227200

https://backpack.tf/profiles/76561198071464973#!/compare/1597449600/1598227200

https://backpack.tf/item/7271068603

Sale 3: Untrace

https://backpack.tf/profiles/76561198341171690#!/compare/1597363200/1597449600

https://backpack.tf/profiles/76561198049651680#!/compare/1593648000/1597449600

Sale 4: Sold for 43 keys~

https://backpack.tf/profiles/76561198049475118#!/compare/1594598400/1596153600

https://backpack.tf/profiles/76561198341171690#!/compare/1594512000/1594598400

https://bot.tf/stats/item?def=31003&q=5&ef=Galactic%20Gateway&craft=1&aus=0&ks=0&source=browser_script

https://gyazo.com/982ce199444407b0e15910758e220db2

Sale 5: Sold for 55 keys

https://backpack.tf/profiles/76561197961279983#!/compare/1600300800/1600387200

https://backpack.tf/profiles/76561198088424051#!/compare/1600387200/1600473600

Sale 6: Sold for The Eldritch Opening Vampire Vanquisher

https://backpack.tf/profiles/76561198106657658#!/compare/1599782400/1600041600

https://backpack.tf/profiles/76561197961279983#!/compare/1599696000/1599782400

Going to use there as it has fewer sales.

Other exchanges such as with qs store and mptf.

https://backpack.tf/item/7302762211

https://backpack.tf/item/9097711969

https://backpack.tf/item/7766218639

Marketplace

https://marketplace.tf/items/tf2/31003;5;u114

July

$117.99 on July 3 (117.99/2 = 59~)

https://manic.tf/keyprice/?at=2020-07-03

August

$65.45 on August 10 (65.45/1.85 = 35~)

https://manic.tf/keyprice/?at=2020-08-10

https://backpack.tf/item/7288923025

93.95 on August 19 (93.95/1.79 = 52~)

https://manic.tf/keyprice/?at=2020-08-19

https://backpack.tf/item/7288923025

91.95 on August 21 (91.95/1.79 = 51~)

https://manic.tf/keyprice/?at=2020-08-21

https://backpack.tf/item/9097711969

91 on August 29 (91/1.85 = 49~)

https://manic.tf/keyprice/?at=2020-08-29

September

$90 on September 4 (90/1.83 = 49~)

https://manic.tf/keyprice/?at=2020-09-04

90 on September 7 (90/1.83 = 49~)

https://manic.tf/keyprice/?at=2020-09-07

113.99 on September 23 (113.99/1.86 = 61~)

https://manic.tf/keyprice/?at=2020-09-23

Classifieds

https://gyazo.com/e365d262cc417c60c356609872e47ba0

Current seller at $119.99 for 6 days (119.99/1.85 = 65~)

Summary

Sales at 43, 55, and 70.

Marketplace sales at 35, 49, 49, 49, 51, 52, 59, and 61.

Conclusion

Going to exclude 35 due to buyers up to 41.5~.

Also excluding 43 as it was to a buyorder, and close to buyers.

Although 70 was pure, it seems high compared to the rest of the sales, and there is a current seller at about 65~, excluding 70.

Going with 49-61 here.