What are Harry Hargrove paintings worth?

I don't know the name of it but it is of 2 little girls sitting in an attic at a table surrounded by toys. There is a mirror on the side that yu can see the girls in. It has a chest with toys spilling out of it. It is very colorful. The girls are dressed up in their Mom's dresses and hats. The painting is a Hargrove and I bought it for about $600 nearly 20 years ago.