How can I increase the value of an invoice before sending it to reflect more than 1 item sold.

[wesnme]

How can I increase the value of an invoice before sending it to reflect more than 1 item sold although only 1 was advertised

[*crikey*mate*]

you can't

you will have to list the other item (or iot might be seen as avoidance of fees)

let the buyer know that they need to BIN. and then combine those two items

[phorum_junkie*]

You shouldn't but if you could you would just add the cost and then not hit recalculate.