Disclaimer: This is a tip I received from tech support that my designer asked, and I'm simply passing it on to the forums. If you want to know why I'm doing this, read here:
http://forum.x-cart.com/showthread.php?t=42824. I'm not a web designer/developer, and I don't know anything about programming the back-end of X-Cart. My version of X-Cart is 4.1.10, so this tip may not work if you use a different version. If you have any questions about this tip, I can't answer them, but reply anyway and hopefully someone more knowledgeable will respond.
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You should modify the "<xcart_dir>/skin1/customer/main/products_t.tpl" file, just find following code:
<font class="ProductPrice">{$lng.lbl_our_price}: {include file="currency.tpl" value=$products[product].taxed_price}</font><br /><font class="MarketPrice">{include file="customer/main/alter_currency_value.tpl" alter_currency_value=$products[product].taxed_price}</font>{if $discount gt 0}{if $config.General.alter_currency_symbol ne ""},{/if} {$lng.lbl_save_price} {$discount}%{/if}
and replace it with this one:
{* <font class="ProductPrice">{$lng.lbl_our_price}: *}{include file="currency.tpl" value=$products[product].taxed_price}</font><br /><font class="MarketPrice">{include file="customer/main/alter_currency_value.tpl" alter_currency_value=$products[product].taxed_price}</font>{if $discount gt 0}{if $config.General.alter_currency_symbol ne ""},{/if} {$lng.lbl_save_price} {$discount}%{/if}