Hide product price until added to cart

-- HikaShop version -- : 3.2.1
-- Joomla version -- : 3.8.2
-- PHP version -- : 7.1.11

We're bidding on a site that requires specific products to not display their price until the product is added to the cart. I don't recall this as a hikashop feature.

I suspect it will require a hidden custom field for the product to serve as a flag, and a modification of the product divs and the product details page to check for that flag and hide the product price (and modify the add to cart button text to read "Add to cart to view price") if the custom flag field is set to true for that product.

Is this the best path to follow?