Purchased an unmetered US VPN from Yalanx a few days ago, got it within 24hrs. So far, I've pumped about 80gb through it with minimal issues.  

EDIT: Seems to be some kind of soft cap around 100gb. If I try to upload continuously, sometimes the connection throttles really bad or drops.

EDIT2: 5/25 The OP has been updated in relation to a fault with the US server. Contacted seller and was provided a temp replacement.