I wonder why Heavy unusuals are worth so little

Sale 1

[No OP Trade] Sold for 8 keys

X = 8

Trade https://backpack.tf/profiles/76561198179396381#!/compare/1503446400/1508803200

Gym https://backpack.tf/item/1563114810

Sale 2

[No OP Trade] Sold for 8 keys

X = 8

Gym https://backpack.tf/item/1402050339

Trade https://backpack.tf/profiles/76561198044335614#!/compare/1507852800/1507939200

Sale 3

[No OP Trade] Sold for Bubbling Glove

X = 9

Gym https://backpack.tf/item/1985704925

Trade https://backpack.tf/profiles/76561198176020335#!/compare/1490054400/1504656000

Glove https://backpack.tf/item/1046039085

Mini for Glove

https://backpack.tf/suggestion/59ef270a44325a535341e78c 9 keys, using 9

Classifieds

https://gyazo.com/4832e4deab9af08608c550417bb91a88 1x 8.18k, 1x 8.21k, 1x 8.44k

Quickbuyers for 8 everywhere, however sales and sellers call for a low range of 8. Using 8-9.