[balinor]

Open up skin1/modules/Product Options/customer_options.tpl and comment out or remove this chunk of code:

{if $v.is_modifier eq 'Y' && $o.price_modifier ne 0} ({if $o.modifier_type ne '%'}{include file="currency.tpl" value=$o.price_modifier display_sign=1 plain_text_message=1}{else}{$o.price_modifier}%{/if}){/if}

Moving to Template Editing.