When you use HTML special symbols on your website pages, it is better to use the actual unicode HTML entities to ensure (X)HTML validation and proper encoding of the content on your pages to all users.

Check out the list of HTML ascii characters and symbols with their respective HTML entities. You might find the currency symbols useful too. If you plan on using entities for the currency symbols in the second link, simply prepend “$” (without quotes) to the values in the Unicode, decimal column/field.