Stormy Storm Cosa Nostra Cap

First unusual suggestion on my own, as I only got my first experience in unusual suggestions during the recent unusual pricing event. Let's see how this goes.

Classifieds (as of 8/19/2019): https://i.imgur.com/GhLrB98.png

Active Sellers:

Seller at 25 for 2 months

Sale #1:

Seller: https://backpack.tf/profiles/76561198830746068#!/compare/1565740800/1565827200

Buyer: https://backpack.tf/profiles/76561198083529516#!/compare/1565654400/1565827200

Sold for 20 keys pure. Had to check the histories of every key on both sides to confirm, though.

Sale #2:

Seller: https://backpack.tf/profiles/76561198337734785#!/compare/1562371200/1562457600

Buyer: https://backpack.tf/profiles/76561198830746068#!/compare/1562371200/1562457600

Seemingly unusable. The hat's were exchanged, but I can't tell for what price.

Sale #3:

Seller: https://backpack.tf/profiles/76561198191206975#!/compare/1560297600/1561334400

Buyer: https://backpack.tf/profiles/76561198337734785#!/compare/1561248000/1561334400

Sold for 18 pure.

Sale #4:

Seller: https://backpack.tf/profiles/76561198832761255#!/compare/1560038400/1560124800

Buyer: https://backpack.tf/profiles/76561198191206975#!/compare/1559174400/1560124800

Sold for 21 pure.

Sale #5:

Seller: https://backpack.tf/profiles/76561198001229964#!/compare/1559347200/1559433600

Buyer: https://backpack.tf/profiles/76561198832761255#!/compare/1559001600/1559433600

Unusuable as I don't know the original buyouts.

Sale #6:

Seller: https://backpack.tf/profiles/76561198830746068#!/compare/1560556800/1560643200

Buyer: https://backpack.tf/profiles/76561198192602363#!/compare/1560556800/1565913600

Untraceable

Sale #7:

Seller: https://backpack.tf/profiles/76561198046714413#!/compare/1560556800/1560643200

Buyer: https://backpack.tf/profiles/76561198830746068#!/compare/1560556800/1560643200

Untraceable

Sales at 18, 20 , and 21. Taking 18-21 keys for a range.