Hey mate unsure what you mean. Is the $20 off a single order of your stuff or a quantity buy of a single model?

since I have to test a few things I will use the $20 discount for myself which covers postage basically but while posting stuff to myself a few people can add their orders to mine if they want for free postage from Europe to Aus and then I can ship cheap (as post cost) from my place to where ever.

It doesn't worry me if no one wants to get anything, just trying to reduce costs if someone needs / wants something.