Tags on the Order confirmation page

Hi all,

we have a 3rd pary app which is tracking order prices created in SquareSpace via JS code, but we have a question about the available tags, which can be used on the Order confirmation page i.e.

{orderSubtotal} 

{orderGrandTotal}

Does someone knows what is the exact price which those tags/variables return? We need the price without shipping and discount (and preferably and without tax). From what I know orderGrandTotal returns the price after the discount, but with shipping.

And orderSubtotal includes both discount and shipping, is there a way to get the price only of the bought products, after discount and with no shipping and tax included?

I searched the forums and the help section, but couldn't find any detailed info.

Thank you in advance!