Expresso Store lets you determine your price decimal places globally. So even if you generally price things as whole dollars ($125.00), it's likely you'll need to set your display to 2 decimal places, since things like percent-based sales, shipping, and sales tax will require displaying the decimal places.
Is there any way, besides PHP, to override the decimal place setting right in the templates? I'm imagining something like {price decimals="0"}
or maybe a more elaborate {price format="something"}
where something apes PHP's money_format()
syntax.