In both the admin/user invoice emails there are two sections where the shipping
is listed. The main and the summary. The summary section uses the proper smarty
call -- {$order.shipping_total|number_format:2} -- the main/first section does
not. I don't recall exactly what it is but something like
{$order.shipping_cost|number_format:2} which does not work.

Finally in the sample "Gateway complete template" there is an "e" missing in the
word purchase.