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Did I mess up my shipping by using ebays recommended postage? I think this usps first class package is more than 3oz : r/USPS
![Airmail shipping with USPS First Class Mail [Forwardo]](http://www.forwardo.com/img/fcmi-envs.jpg "Airmail shipping with USPS First Class Mail [Forwardo]")
Airmail shipping with USPS First Class Mail [Forwardo]
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Can someone explain how this went coast to coast First Class for only $1.20? First class typically costs me $3.70+ : r/USPS
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