You never edit core css files, so you must either have your own CSS where you have been making modifications or you used the Custom CSS in the admin.
The price exists on that page. I see it on line 412 of view-source:
http://www.ridgewaycompany.com/xcart/cart.php?target=product&product_id=40
Someone has added:
Code:
.product-details span.product-price, .product-quicklook span.product-price {
display: none;
}
Which has two class definitions as you can see. the .product-details span.product-price is the one affecting the price on this page. It is set to display none.
If you either edit the css above and remove the reference to that class, or add somewhere lower:
Code:
.product-details span.product-price {
display: block;
}
then your price will display.