I bought this top for a friend, so I can't speak of the durability/comfort of a top, but I can comment on material quality and so forth.
The brand is unmarked, and a number of sellers on Chictopia seem to carry this top, so I would shop around to find the best deal. As for sizing, the items asian sellers list tend to run on the smaller side, so I would consider sizing up if the piece is one with little give/zipper closure. The fabric and construction of the top is very average. On par with F21.
The shipping time wasn't bad considering awwdore is an int'l seller. The wait was no longer than two weeks. They don't provide a shipping number, so if you're like me, and like to constantly check up on the status/location of your order, know that this is a luxury you won't be able to indulge in.