[INVOICETHIRDITEMNUM] - price of the item listed third in the invoice but the value is displayed with a decimal point and no thousands separator (for calculations)
[INVOICEFOURTHITEM] - price of the item listed fourth in the invoice
[INVOICEFOURTHITEMNUM] - price of the item listed fourth in the invoice but the value is displayed with a decimal point and no thousands separator (for calculations)
[INVOICEFIFTHITEM] - price of the item listed fifth in the invoice
[INVOICEFIFTHITEMNUM] - price of the item listed fifth in the invoice but the value is displayed with a decimal point and no thousands separator (for calculations)
[INVOICEUPSELL0] - base price without upsell items or other charges added later