It usually shows be default on the products.tpl also atleast mine did.
Anyway, just put this code where you want the price to go and it should work.
<tr><td class=ProductPriceConverting>{$lng.lbl_price}:</td>
<td>
{if $product.price ne 0}
<font size="1">{include file="currency.tpl" value=$products[product].price}</font><font size="1"> {include file="customer/main/alter_currency_value.tpl" alter_currency_value=$products[product].price}</font>{if $config.Taxes.use_vat eq "Y" and $products[product].vat gt "0"}, {$lng.lbl_including_vat} {$products[product].vat}%{/if}
{else}
<input type=text size=7 name=price>
{/if}
</td>
</tr>
Note that this code has its own table row.
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