With the use of YITH WooCommerce Catalog Mode, you can show or hide the price and/or “Add to cart” button for one or more products of your shop. If hidden, you can provide a form through which users can send possible requests.
The integration between these two plugins allows hiding price and Add to cart button also on “bundle” products.
After installing and activating both plugins, your products will be shown in catalog mode.
For further details about YITH WooCommerce Catalog Mode settings, please refer to the official documentation.