Cheapadiecast,
the way to offer a discount on zero, being postage, in the case of multipurchases, is to give the buyer a partial refund once they have paid.
that is easy to do if they pay with Paypal, you go to the payment, and follow it from there.
it is not ideal, but it is possible.
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Buttercup: You mock my pain! Man in Black: Life is pain, Highness. Anyone who says differently is selling something.
