Fine, I'll do it. Damnit.

https://marketplace.tf/items/tf2/15008;15;u703;w1;pk5;kt-2

https://backpack.tf/item/7635596011

$100 = 55 keys

https://marketplace.tf/items/tf2/15008;15;u703;w1;pk5

https://backpack.tf/profiles/76561198074701151#!/compare/1567296000/1567728000

https://backpack.tf/profiles/76561198872866384#!/compare/1567468800/1567555200

https://backpack.tf/item/4108459959

$94.99 = 52 keys

https://backpack.tf/profiles/76561198080179568#!/compare/1569369600/1569542400

https://backpack.tf/profiles/76561198355035421#!/compare/1569283200/1569542400

Using on the Tomislav

https://backpack.tf/profiles/76561198031126990#!/compare/1566777600/1566864000

https://backpack.tf/profiles/76561198355035421#!/compare/1566777600/1567036800

Sunbeams Burning Question, which is in-date at ~65 keys

However, price is already out of date looking at current sellers. Two sellers at and under 50 keys, and a Marketplace seller at ~55 keys.

https://backpack.tf/profiles/76561198224648164#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198031126990#!/compare/1566518400/1566604800

Bulkish

https://backpack.tf/suggestion/5d89b2a5678072099d71f197 (Sale 5)

https://backpack.tf/profiles/76561198224648164#!/compare/1565740800/1565827200

https://backpack.tf/profiles/76561198060458887#!/compare/1565740800/1565827200

Already used on this suggestion, but the Burning Birdcage would be around 38 keys, making the Medi Gun 38 keys.

https://backpack.tf/suggestion/5d6d9d3dd381721fb218b6bb (Sale 4)

https://backpack.tf/profiles/76561198060458887#!/compare/1565740800/1565827200

https://backpack.tf/profiles/76561198351184262#!/compare/1565395200/1565827200

Already used on this suggestion, as a low outlier for the Burning Noble.

However, using the new Burning Noble price, this would make the Medi Gun around 63 keys.

https://backpack.tf/suggestion/5d58969567807260293c594f

https://backpack.tf/profiles/76561198351184262#!/compare/1564790400/1565136000

https://backpack.tf/profiles/76561198133689737#!/compare/1565049600/1565136000

Already used on this suggestion. Sold for Isotope Masked Mender Medi Gun MW, currently priced at ~49 keys.

Sales:

52

55

~50-55 (Sunbeams Burning Question)

~38 keys (Burning Bird Cage)

~63 keys (Burning Noble)

~49 keys (Isotope Masked Mender Medi MW)

Seller:

https://gyazo.com/3289ed52cde9cf53773ecbbcd386b8f7

Going with a range of 45 keys (off current seller) to 55 keys. Excluding the Burning Noble sale.