Numbers and jargon in dialogue should usually be spelled out in full, and as specifically as possible. If not, you run the risk of your actor saying something different than you intend.
If you writer your scene:
MARY
How much is the bill?
SHOP OWNER
$1,329.00
We don’t know who this shop owner is, or how the actor portraying him is supposed to deliver that line.
Better would be:
SHOP OWNER
One-thousand three-hundred twenty-nine dollars.
Or:
SHOP OWNER
Thirteen-hundred’n twenty-nine.
Or if he’s robotic:
SHOP OWNER
One three two nine and zero cents.
With dates, phone numbers, addresses, and codes, it’s generally okay to use the numbers themselves. But if you want a specific reading, it is always safer to write it out.
### More from johnaugust.com
* [Numbers in dialogue](http://johnaugust.com/2010/numbers-in-dialogue “Numbers in dialogue”)
* [How to write dialogue](http://johnaugust.com/2007/how-to-write-dialogue “How to write dialogue”)
* [Stressing out in dialogue](http://johnaugust.com/2010/stressing-out-in-dialogue “Stressing out in dialogue”)
* [Numbers in dialogue](http://johnaugust.com/2010/numbers-in-dialogue “Numbers in dialogue”)
* [How to write dialogue](http://johnaugust.com/2007/how-to-write-dialogue “How to write dialogue”)
* [Stressing out in dialogue](http://johnaugust.com/2010/stressing-out-in-dialogue “Stressing out in dialogue”)