Problem
Travis is a professional landscaper. He provides his clients with a one-year (12 month) warranty for retaining walls he installs. In June of this year, Travis installed a wall for an important client, Sheila. In early November, Sheila informed Travis that the retaining wall had failed. To repair the wall, Travis paid $700 cash for additional stone that he delivered to Sheila's location on November 20 of this year. Travis also offered to pay a mason $800 to repair the wall. Due to some bad weather and the mason's work backlog, the mason agreed to begin the work by the end of January of the next year. Even though Travis informed the mason that he would only pay the mason the $800 when he completed the job.
Assuming Travis is an accrual-method taxpayer, how much can he deduct this year from these activities?