[amy2203]

OK, so you want a different price display for your closeouts category than the rest. OK

you tried this:

{if $product.price ne 0 && $cat="78"}
<font class="MarketPrice">{$lng.lbl_market_price}:{math equation="100-(price/lprice)*100" price=$product.taxed_price lprice=$product.list_price format="%3.0f" assign=discount}
&nbsp;<span id="save_percent"><font class="closeoutsdiscount">{ $discount }</span>%</font>

and it didn't work. It looks about right to me, but you haven't got and end if

{if $product.price ne 0 && $cat="78"}
<font class="MarketPrice">{$lng.lbl_market_price}:{math equation="100-(price/lprice)*100" price=$product.taxed_price lprice=$product.list_price format="%3.0f" assign=discount}
&nbsp;<span id="save_percent"><font class="closeoutsdiscount">{ $discount }</span>%</font>
{/if}

I take it you have used webmaster mode to check the value of $cat for your closeouts category?