Mason gets the basic recovery: KP - RP = ($2000 - $300) = $1700.
The incidental damages get added in: (KP - RP) + ID = ($2000 - $300) + $50 = $1750.
Then the expense saved gets subtracted: (KP - RP) + ID - ES = ($2000 - $300) + $50 - $100 = $1650.
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