Does anyone know how to setup a payment button that will auto-adjust the price based on quantity? I create graphics for people and if people order 9 ads or less, its $40 per ad. But if they order 10 or more ads then it's only $30 per ad. I'm trying to set this up so someone can click a PayPal button on my webpage, type in their quantity and it will charge them based on the model above.
... View more
