This has not been test printed, keep that in mind if you are considering an order.
This is extremely thin, I don't know if it will be stable. It is designed somewhat for novelty; the walls of the glass are perhaps impractically thin. Ideally though, this cup offers a very low volume, but 6 inch tall object to print.
Though it is a cup, please remember that Shapeways materials are technically not food or drink safe. Though most materials likely would have no adverse effects, I advise caution when dealing with food or drink.