How to determine the purchase price of cabinets when they came with the home when we purchased it in 2014 and donated receipts total $3,675.00?

we received 3 separate receipts for donated kitchen cabinets which total $3,675.00 and were determined by the donation firm. I entered the date when we purchased the home 11/12/2014, and it is asking for the purchase price of the cabinets which came with the home when we purchase it.