Few sales. Big range. That's taunt for ya.

New price: 6.5-9 keys

Proof:

Sale #1 (1 month)= 9

https://backpack.tf/profiles/76561198011321852#!/compare/1527724800/1527811200

Sold for 9 keys 1 rec.

Sale #2 (2 weeks)= 6.5

https://backpack.tf/profiles/76561198079468968#!/compare/1530144000/1530230400

Sold for 6 keys + dead of night (14 ref) = ~6.5.

Sale #3 (1 month)= invalid

https://backpack.tf/profiles/76561198153913253#!/compare/1527465600/1527552000

Sold for 5 keys. Histories are completely f*cked up. Excluding.

Sale #4 (1 month)= invalid

seller: https://backpack.tf/profiles/76561198025539187#!/compare/1530489600/1530662400

buyer: https://backpack.tf/profiles/76561198331705499#!/compare/1529366400/1530748800

Looks like it sold for 6 keys. Histories don't match completely. I guess 2 keys have been traded away immediately. Can anyone confirm? Excluding for now.

Sale #5 (fresh)= 5

https://backpack.tf/profiles/76561198005005502#!/compare/1531180800/1531267200

Sold for a prof ks original (5).

bot.tf sales:

https://bot.tf/stats/item?def=1116&q=5&ef=Spectral+Swirl&craft=1&aus=0&ks=0

https://imgur.com/a/XN4UQqU

https://backpack.tf/profiles/76561198305676157#!/compare/1525816800/1525903200 - 9

https://backpack.tf/profiles/76561198305676157#!/compare/1527717600/1527804000 - 8 keys 26 ref = ~9

https://backpack.tf/profiles/76561198306211537#!/compare/1530223200/1530309600 - 5

_________________________________________________________

SUMMARY

Sales:

5 x2

6.5 x1

9 x3

5 countered by buyers.

Sale #4 and Sale #5 (depending on how you price the original) support 6.5. Including 6.5.

Going with 6.5-9 keys.

Feel free to add proof to support or counter my new price.