An alternative approach may be to post if he's also in Melbourne.

Aus Post will do a flat rate of $10 for up to 22kg packed weight if the destination is in the same zone (probably V1 ??).

If the destination is within 50km that drops to $9.30 (again, flat rate up to 22kg packed weight.

Just send him an invoice via PayPal for the postage cost.

Doing it that way you won't have to deal with this idiot in person.