Contributions

Insert this instad of previous code if you only want to show the price in the select box when the option really has a different price (+ or -) from standard price:

if ($products_options['options_values_price'] != '0') {
if ($products_options['price_prefix'] == '+'){
$real_price = ($product_info['products_price']) + ($products_options['options_values_price']);
$products_options_array[sizeof($products_options_array)-1]['text'] .= ' (' . $currencies->display_price($real_price, tep_get_tax_rate($product_info['products_tax_class_id'])) .') ';
}else{
$real_price = ($product_info['products_price']) - ($products_options['options_values_price']);
$products_options_array[sizeof($products_options_array)-1]['text'] .= ' (' . $currencies->display_price($real_price, tep_get_tax_rate($product_info['products_tax_class_id'])) .') ';
}
}

This mod will display the real price on the drop down when you check for Product Information.

Instead of having (+$8.00) or (-$8.00) on the drop down, it calculates the exact amount and readily display it on the drop down.

I have included a sample image to display the effect. Instructions included on a separate file

Single file to edit, product_info.php