The Catalog or store I'm featuring on my site lists only so-called "freemium" based IT products and services. That is, the base price for any of the products and services is always free or zero cost. Your suggestion for "Call for Pricing" would not work. Moreover, showing zeroes on all products and services looks like an error is occurring in the virtual storefront. It's largely an aesthetic issue than anything else.

That's why I think it would be perfect logic within Live Storefront to suppress $0.00 for prices if you configure it for Disable Buy Button.  

Simply modify the theme/template and remove the price. 

I did that per your assistant's recommendations. However, every time I go to update the Live Storefront module won't it override the template modifications?

Please create your own theme by following https://www.mandeeps.com/support/knowledgebase/live-storefront-themes1-how-do-i-create-a-new-theme-for-my-store

After creating the theme you should change in template which is at /Portals/_default/LiveStoreFront/Store/Themes/YourCustomTheme\Templates\Common\productlist.cshtml

and remove/comment following code from Line no: 72 to 86

else {
 if (p.IsOnSale) {
  if (p.SpecialPrice >= 0) {
   <
   span > < del > @(Model.Store.Catalog.TaxDisplayType == (int) TaxDisplayType.Includingtax ? p.FormattedOldPriceIncludeTax : p.FormattedPrice) < /del></span >
    <
    span class = "amount" > < ins > @(Model.Store.Catalog.TaxDisplayType == (int) TaxDisplayType.Includingtax ? p.FormattedSalePriceIncludeTax : p.FormattedSalePrice) < /ins></span >
  }
 } else {
  <
  span class = "amount" > < ins > @(Model.Store.Catalog.TaxDisplayType == (int) TaxDisplayType.Includingtax ? p.FormattedPriceIncludeTax : p.FormattedPrice) < /ins></span >
 }
}

OK, thanks. That's seems to work. I'll know for sure after the next update to Live StoreFront.