|   | Machine A | Machine B | Incremental Cost  (B - A) | 
| Purchase price | $25,000 | $28,000 | $3,000 | 
| Cash Operating costs | 5,000 | 4,000 | (500) | 
| Depreciation of old equip | 1,500 | 1,500 | 0 | 
The incremental costs are purchase price ($3,000) and cash operating costs ($500). Here is a question for you based on the information in the table. What are the sunk costs, if any, in this situation?
