I was provided with a USPS tracking number from the supplier, but it didn't seem to work. On querying, the response was:
Please note that the tracking number provided is not very good since USPS International tracking numbers are recycled. In addition, the tracking number provided does not actually go into affect until it reaches the final destination so you cannot tell where the package is while in route.
Let me guess...if you opt for premium shipping, they won't deliver your parcel?