Historical Order Prices Database Location

We have a client who we are exporting certain data from the database. One item we cannot find is historical product prices when the order was made. For example we have an order where the customer ordered a product and at the time of the order is cost $249 but it now only costs $209. This is displayed correctly when viewing the order but I cannot find this information in the database anywhere. Are we able to export this type of data? If so what tables would this data be stored in?