I cannot enter a shipping price into the buyer's invoice. I'm mailing from Canada to the US.

[nohandle-mac]

I cannot enter a shipping price into the buyer's invoice. How come?

I'm mailing from Canada to the US.

[dmil8030]

The following link will tell you how to send a revised invoice:

http://pages.ebay.ca/help/pay/checkout-invoices.html#invoice

When you enter the new shipping fee, do not click Recalculate.  Doing that takes you back to square one.  Just add the amount, Preview, then Send.