Sorry,we don't have better way so far than USPS,actually ,USPS is a quick and cheap way for a international transportation.
Highest cost performance.ONLY need 8-15 days usually.
What's more,the item is already in transmit,so we aren't able to change the carrier now.
We really appreciate for your kind understanding and support to us .
Any other help need,please feel free to let us know.
Sorry for our late response,we are in China,time difference,we try our best to answer every e-mail within 24 hours.