I have no minimum for the glasses I stock. My setup cost is $50 for one color one sided project. Please note that shipping is not included.
There is no minimum on the amount you can purchase for the glasses I stock and can print case quantity one many others as well.
The Pint glasses that I use at Custom Printed Beer Glasses are rim tempered and I use restaurant quality glasses for my projects, this means you can be sure that the glasses will last. The ink that I use is not digital; in fact, I print and cure them myself onto the glasses.
$50 Setup One color One Side