Heavy is ready to conga in the disco.

New price: 12-18 keys

Proof:

Sale #1 (1 week)= 12 keys

https://backpack.tf/profiles/76561198810908103#!/compare/1528502400/1528588800

Sold for 12 keys.

Sale #2 (2 months)= 17 keys

https://backpack.tf/profiles/76561198012508281#!/compare/1524441600/1524528000

Sold for spec ks australium flame thrower (17).

Sale #3 (2 months)= 12 keys

https://backpack.tf/profiles/76561198048520924#!/compare/1524096000/1524182400

Sold with 2 keys for a blizzardy bicorne (14) = 12 keys. Mini below.

Sale #4 (2 months)= 16 keys

https://backpack.tf/profiles/76561198046212402#!/compare/1524009600/1524096000

Sold for 16 keys.

Sale #5 (2 months)= invalid

https://backpack.tf/profiles/76561198159375969#!/compare/1523923200/1524009600

Sold for a miami nights handyman's handle + 1 key. No valid sales for a mini.

Sale #6 (2 months)= invalid

https://backpack.tf/profiles/76561198159375969#!/compare/1523836800/1523923200

Sold for a planets head warmer. No valid sales for a mini again.

Sale #7(2 months)= 8 keys

https://backpack.tf/profiles/76561198373321998#!/compare/1523836800/1524268800

Sold for a '72 flippin awesome (7.5) and some irrelevant sweets. Rounding to 8.

Sale #8 (2 months)= 10 keys

https://backpack.tf/profiles/76561198126257984#!/compare/1526688000/1526774400

Sold for a magnetic head full of hot air (9) + killstreak shooting star (1) = 10 keys.

Sale #9 (2 months)= invalid

https://backpack.tf/profiles/76561198114791325#!/compare/1526601600/1526688000

Sold for a p confetti base metal billycock + 6 keys sweets. No valid sales for a mini.

Sale #10 (2 months)= 13 keys

https://backpack.tf/profiles/76561198047988796#!/compare/1525219200/1525305600

Sold for 13 keys 13 ref. Rounding to 13.

Sale #11 (1 month)= invalid

https://backpack.tf/profiles/76561198161875802#!/compare/1526256000/1526342400

Sold for a p confetti Professor's Peculiarity. No valid sales for a mini.

Sale #12 (1 month)= 18 keys

https://backpack.tf/profiles/76561198021055079#!/compare/1527120000/1527206400

Sold for 18 keys.

Sale #13 (1 month)= 12 keys

https://backpack.tf/profiles/76561198080361060#!/compare/1525219200/1525305600

Sold for 12 keys.

Sellers at 14-18:

https://imgur.com/a/GN9SYk8

_________________________________________________________

Minis

blizzardy bicorne:

https://backpack.tf/suggestion/5b1e908844325a0e047ac898

Going with 14.

magnetic head full of hot air:

https://backpack.tf/profiles/76561197963500354#!/compare/1528588800/1528675200

Sold for 9 keys.

https://backpack.tf/profiles/76561198091553197#!/compare/1528675200/1528934400

Sold for 9 keys.

Going with 9.

_________________________________________________________

SUMMARY

Sales:

8

10

12 x3

13

16

17

18

Calling 8 and 10 low.

Sellers at 14-18 are not too old, so a wider range seems reasonable.

Going with 12-18 keys.

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