Carly sold land that she purchased 10 years ago for $3,000. The selling price of the land was $7,000 and Carly paid broker's fees of $420. When she originally purchased the land, she paid $1,000 to clear some of the brush in order to make a walking path down to a nearby lake. In the ten years since the purchase, Carly paid $200 per year to keep the path maintained. Carly's amount realized on the sale was $ _______.