[Plugin: Fast Secure Contact Form] Using commas in select items

I’m trying to have a select box with options that contain commas, but Fast Secure Contact Form doesn’t seem to like them, I assume because of the syntax used to set up a select box. However, I need the commas because my options look like this:
$10,000-$15,000
$15,000-$20,000

and so on.

Does anyone know of a way to “escape” the comma?