Actual replacement cost is the amount of money it would cost to replace a damaged item with a new one at the time of the claim. Actual replacement cost does not factor in an item's age and depreciation, or the effects of wear and tear over time.
If your couch was worth about $200 dollars in a yard sale before it became damaged, but would currently cost $1000 to replace with a new couch of similar size and style, the actual replacement cost of your couch would be around $1000.