No ifs or buts, the outstanding balance of the bond should be considered in the price of the home. Anyone who ignores this fact deserves to overpay for the home. Some sellers with bond balances will try to refute it as an additional cost. If you get one of these owners and your offer based on consideration of a bond balance is refused, go on to the next one. There are plenty of homes on the market.
Many Villages Properties sales people downplay the bond issue when selling new (especially a few years ago) but seem to "fess up" when selling used. Almost all independent agents tell it like it is.