Price format in notification emails

Hi,

That's normal. The dynamic tag you're using uses the data coming directly from the database and in the database the order_full_price column of the hikashop_order table has a type with 5 decimals.
Then, HikaShop rounds the price when displaying it to 2 decimals as per your currency settings.
Here, that second part isn't done.
So either:
- edit the structure of the hikashop_order table via your PHPMyAdmin access and change the number of decimals from 5 to 2 for that column.
- instead of using this tag, you could add PHP code like this:

<?php echo round($data->cart->order_full_price, 2); ?>