A bond is the price of the infrastructure of the area where you bought. The pipes and electrical, the streets and sewage. In other areas it is part of the price of the home. Here it is separate.
The developer collects the bond and you pay rather high interest on it. You can pay it off at any time or like many of us, pay it yearly thinking you may sell and move somewhere else in The Villages and that makes the price of your home seem lower.
Words to The Wise on Bonds