MP sales:

https://marketplace.tf/items/tf2/30845;5;u3001

Jan 12: 8.15 / 1.78 = 4.6

Jan 13: 7.99 / 1.77 = 4.5

Jan 18: 7.99 / 1.78 = 4.5 https://backpack.tf/item/6253041695

Jan 22: 8.9 / 1.78 = 5 https://backpack.tf/item/8228402768

Jan 25: 8.9 / 1.79 = 5

Feb 28: 6.25 at buy order price

March 14: 6.25 at buy order price

Bot.tf sales:

https://bot.tf/stats/item?def=30845&q=5&ef=Showstopper&craft=1&aus=0&ks=0

1 @ 4 keys, 20.00 ref 23/01/2020 https://backpack.tf/profiles/76561198340634356#!/compare/1579734000/1579820400

1 @ 4 keys, 20.00 ref 25/01/2020 https://backpack.tf/profiles/76561198340634356#!/compare/1579906800/1579993200

= 4.4 keys

Other trades:

1. https://backpack.tf/item/7422217832

https://backpack.tf/profiles/76561198351783918#!/compare/1581120000/1581206400

Unusable

2. https://backpack.tf/item/7422217832

https://backpack.tf/profiles/76561198087281239#!/compare/1582588800/1583020800

Unusable

3. https://backpack.tf/item/7134045053

https://backpack.tf/profiles/76561198041850120#!/compare/1580688000/1580774400

Unusable

4. https://backpack.tf/item/6619304263

https://backpack.tf/profiles/76561198081125754#!/compare/1583280000/1583539200

Unusable

5. https://backpack.tf/item/6257983575

https://backpack.tf/profiles/76561198120413396#!/compare/1584057600/1584662400

Unusable

Taking 4.4 - 5 keys