How would you eliminate or fix the product quantity in marketpress

Our students/customers will only ever buy one thing at a time.

Also, based on the wording of some things, it is extremely confusing to have the quantity box visible.

I can hide it – but if you refresh the page (a shortcoming of dynamic url variables) it will increment the quantity and the the customer would have no way to remove it.

I need to hardwire the quantity to “1”, always, and then display:none the field – or some other solution – any help appreciated.