Admin > Catalog > Product Types > edit layout > Show Attribute Weight.
The parentheses are built in rather deep in the code. Find this bit in /includes/modules/your_template/attributes.php, around line 157:
PHP Code:
} else {
// normal price
if ($new_attributes_price == 0) {
$products_options_display_price= '';
} else {
$products_options_display_price= ' (' . $products_options->fields['price_prefix'] .
$currencies->display_price($new_attributes_price, zen_get_tax_rate($product_info->fields['products_tax_class_id'])) . ') ';
}
You will see ..._price= ' (' . $prod... and ...'products_tax_class_id'])) . ') ';
Remove the parentheses between single quotes, but leave the spaces:
PHP Code:
..._price= ' ' . $prod...
...'products_tax_class_id'])) . ' ';