The default .phtml files for the order emails that display prices are saved in
app/design/frontend/default/base/template/email/order/items/
and
app/design/adminhtml/default/default/template/email/order/items.phtml
To remove prices from these emails, look through them for references to the function formatPrice
and remove the surrounding HTML. If you remove the entire "Subtotal" <td>
, then you'll want to also remove the "Subtotal" heading <th>
from
app/design/frontend/default/base/template/email/order/items.phtml
Ideally you should avoid modifying the original files and would instead copy the files to your own theme folder and make your changes to the copy.