Make products "view only"

I have a whole series of products that I want to list in the categories with a preview and price, but I don't want them be able to order. In other words I want them to see the product, but have them be sent to a one-page order form instead of the regular shopping cart.

Any suggestions?

If you wanted to prevent Products in master_categories_id 10 from being added to cart, you could customize the function_general.php and add the code in RED:

// Switch buy now button based on call for price sold out etc.
  function zen_get_buy_now_button($product_id, $link, $additional_link = false) {
    global $db;

// show case only superceeds all other settings
    if (STORE_STATUS != '0') {
      return '<a href="' . zen_href_link(FILENAME_CONTACT_US) . '">' .  TEXT_SHOWCASE_ONLY . '</a>';
    }

// bof: no add to cart for Products in master_categories_id 10
  $chk_cat = zen_products_lookup($product_id, 'master_categories_id');
  if ($chk_cat == 10) {
    return 'Product unavailable';
  }
// eof: no add to cart for Products in master_categories_id 10