I ordered 8 personalized cups for special helpers for my wedding. I was a bit worried they wouldn't ship in time based on the shipping estimate dates. They sent proofs which were exactly what I wanted and we ordered them. They actually shipped very quickly. Thanks Yoonek!
As other people mentioned they engrave Ikea cups, so there is an Ikea logo on the bottom. Not a big deal, Ikea has good cups (just like you see pictured), but just be aware.