Yoeleo's are going for about $350, shipped from China. These will likely be about $200, from a local buyer, a person in an unfortunate situation at my cycling gym, and I have already seen the wheels in person. They look like well build rims, spoke tension is relatively uniform. Hubs are not the smoothest ever but seem to have a lot of pawls, perhaps more than my current cheap Vueltas. Enve rim tape, apparent Enve parabolic shape. They actually look nice.

/tldr I have the opportunity to actually look at them in person, perhaps even ride them, so what should I be looking for as a red flag?