Last year, your company purchased a site license to the accounting software suite FUN for $10,000. Yesterday, your IT department discovered that the software erroneously calculates 2+2=5 and suggested purchasing a replacement software for $15,000. How should your company assess or quantify the cost of the decision to replace its software? The replacement software includes a monthly fee of $100 per site license (i.e., the fee to the company is $100 per month regardless of the number of computers on which the software is installed or how often it is used); how would the company characterize this cost (in terms of the concepts we've discussed this week)?