Since we're very "old school," we have paper tally sheets and clipboards. We write down the price and how many books there are at that price. It's labor intensive to say the least. Luckily, we have about 15 volunteers helping us each year.
Today, it took about 5 hours to inventory the entire store. That is, it took 5 hours to write down the number of books and their prices. Now it will take WEEKS to add up all the tally sheets and reach the total.
I'm glad Inventory Day only happens once a year!