I have been trying to find a vase like this nearly whole and failed. You know when you get that kind of feeling that something is wrong?
flying free is right here, to me the rim looks quite rough, uneven and too "thick". Again I am not an expect, just a glass lover trying to learn more about it, but what I already know is that when you have a doubts (buying something online) that is a time to leave it for others. ;-)