Resuggesting because of recent SCM sales. Thanks for the tip Jarool.

Made suggestion using SCM sales (https://steamcommunity.com/market/listings/440/Strange%20Tartan%20Spartan)

Excluding the sale on April 3rd, as it's low enough to be an outlier. Using the SCM price of a key (2.49,) here's what I've got:

Lowest considered sale at $2.80 USD is about 1.12 keys.

Highest considered sale at $3.45 USD is about 1.38 keys. Suggestion is rounded to the nearest tenth.