The Haunted Phantasm Mannrobics

Proof 1, 2 and 3 - mp.tf sales (https://marketplace.tf/items/1162;5;u3011)

Sale 1: Jan 4 - Sold for 69 Dollars - 69/1.80=38.3 - rounding down to 38, BUT: 1. Buy orders on bp.tf counter this number, so the sale was prob. a mp buy order. OUTLIER

Sale 2: Jan 30 - Sold for 99.99 Dollars - 99.99/1.80=55.5 - rounding up to 56

Sale 3: Mar 6 - Sold for 93 Dollars - 93/1.80=51.6 - rounding up to 52

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I don't know if this is enough, but I'm going with 52-56, feel free to comment suggestions.