• (v. t.) To stand on the price or conditions of, so as to lose a sale; to lose by an extravagant price or hard conditions.
to stay to long on one tack when racing to a mark
O`ver·stand' transitive verb To stand on the price or conditions of, so as to lose a sale; to lose by an extravagant price or hard conditions. [ Obsolete] « What madman would o'erstand his market twice ?» Dryden. 
overreach (def. 13).