If you are reporting the reimbursement received as income, then you can deduct the cost under Printing expense.
Log into your TurboTax account.
Click on Federal
Income & Expenses
Add expenses for this work
Other Miscellaneous Expense
You can enter Printing in the Description field and then the amount
You can also enter it under Cost of Sales, but if you don't have any other costs, entering it under the expense portion is a better way to go.