yeah alot of agents have that attitude. it can work for or against you...
as you'll see from most of the threads on here, alot of buyers go in waaaaaaaaaaay below the asking price so you'll probably not get anywhere near your 'real' asking price.
market the property honestly... check out what other properties have SOLD for (not the asking price... and price accordingly...
In my experience, alot of agents won't reveal what price property sold for.