How Can I Make My Product Page Private

Hello! I am working with the awesome MarketPress plugin and creating customized products. My products are merely services that are created for each client. We quote them a cost, they agree, we create the product and send them the link.

The problem is that we don't really want a products page. We just want many pages, with each product.

My plan was to just change the "Products" + "Store" pages to private. That way no one could access them, but those are dynamically created.

Any suggestions as to how I could jump this hurdle?