In my native language, we use a colon and a hyphen after a price to show that there are no decimals involved, so, we write for instance €10:- to show that the price is ten euros exactly; not, say, ten euros and five cents.
Now I'm wondering if you have something similar in English, and if so, if there's a difference between BrE and AmE.
Edit: I have now found some weak support for a long dash: $10— Is there anyone who can corroborate this use?
Also, if you use .00, how do you use this with non-specified sums of money? Like, I would write €xx:- to indicate that a price will always be without decimals. Would you write €xx.00 then?
(Also, if someone can think of further tags for this question, I'd be very grateful if you could just add them :) )