Oh; Then in that case you don't need to change much the translations. You should go in the hikashop options of your menu/module and change the "Price display method" to "cheapest" so that it only displays the cheapest price on the listing and not all of them.
Then, you will have to edit the file "listing_price" of the view "product" via the menu Display->Views to remove the PER_UNIT_AT_LEAST_X_BOUGHT display on the listing and add a from before the price.
So replace the line:
echo JText::sprintf('PER_UNIT_AT_LEAST_X_BOUGHT',$price->price_min_quantity);
by:
if(@$_GET=='product'&&@$_GET=='show') echo JText::sprintf('PER_UNIT_AT_LEAST_X_BOUGHT',$price->price_min_quantity);
and:
echo JText::_('PRICE_BEGINNING');
by:
if(@$_GET=='product'&&@$_GET=='show'){ echo JText::_('PRICE_BEGINNING'); }else{ echo 'From ';}