Taylor Textbooks Inc. buys on terms of 2/15, net 50 days. It does not take discounts, and it typically pays on time, 50 days after the invoice date. Net purchases amount to $450,000 per year. On average, what is the dollar amount of costly trade credit (total credit − free credit) the firm receives during the year? (Assume a 365-day year, and note that purchases are net of discounts.)