15 sales

1) ~1 key

https://backpack.tf/profiles/76561198054275169#!/compare/1568851200/1568937600

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2) https://marketplace.tf/items/tf2/30512;6 (taking sales from July 1st)

2.1) $1.71, keys were at $1.83

1.71/1.83 ≈ 0.93 keys

2.2) $1.71, keys were at $1.85

1.71/1.85 ≈ 0.92 keys

2.3) $0.82, keys were at $1.83

0.82/1.83 ≈ 0.45 keys

2.4) $0.82, keys were at $1.81

0.82/1.81 ≈ 0.45 keys

2.5) $1.69, keys were at $1.81

1.69/1.81 ≈ 0.93 keys

2.6) $1.7, keys were at $1.8

1.7/1.8 ≈ 0.94 keys

2.7) $1.69, keys were at $1.81

1.69/1.81 ≈ 0.93 keys

2.8) $0.66, keys were at $1.81

0.66/1.81 ≈ 0.36 keys

2.9) $1.67, keys were at $1.81

1.67/1.81 ≈ 0.92 keys

2.10) $1.69, keys were at $1.82

1.69/1.82 ≈ 0.93 keys

2.11) $1.69, keys were at $1.81

1.69/1.81 ≈ 0.93 keys

2.12) $0.8, keys were at $1.84

0.8/1.84 ≈ 0.43 keys

2.13) $0.8, keys were at $1.81

0.8/1.81 ≈ 0.44 keys

2.14) $1.69, keys were at $1.82

1.69/1.82 ≈ 0.93 keys

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Total: 0.36, 0.43, 0.44, 0.45, 0.92, 0.93, 0.94, 1. Rounding to 0.9 — 1.

New sale.

https://marketplace.tf/items/tf2/30512;6

$1.69, keys were at $1.83

1.63/1.83 ≈ 0.92 keys

New 3 sales for $1.69 (~0.93 keys)

https://marketplace.tf/items/tf2/30512;6