According to the book Misbehaving: Kelly makes $100,000 per year and gets a raise of $1,000 per year and does not even realize that her paycheck is higher than it was before. Logan makes $20,000 per year and gets a raise of $1,000 per year and is ecstatic about the extra money in his paycheck. The extra $1,000 is a(n) ___ for Logan but not for Kelly.

The answer is not windfall, windfall gain, or gain.