spyder, correct me if I'm wrong, but wouldn't that be asking for trouble?
If one would make the "not-to-exceed" value equal to the "bid price", then go with a bid.
Seems to me, you're putting a "ceiling" price on something, but no "bottom" price, atleast with a bid, there is only one price.
Make sense?
Or am I just missing soemthing fundamental again?