Im sadly writting my experience with 3drobotics, on APR 4th, I bought some stuff from their store. I had to choose between USPS or Fedex, I chose USPS (I never had problem before) (I live in Argentina).
Two month later, I wrote them an email, becouse my parcel never arrived.
They reply me my tracking number, and told me to ask USPS for further information. Elvira from 3drobotics answared me.
I contact USPS, and they told me that the sender is the one who must contact them.
I forwared Elvira the email from USPS, Elvira didnt gave me a correct answer. Then Octavio Osorno start answering my emails. I re-forwared the email from USPS, where they told me sender must contact them. And the next Octavio's mail was that he was sorry and the package was lost. That I should have chosen Fedex.
I chosen one of the options that they gave me. And now they are not responsible and I lost my purchase. I never had problems before with USPS, I lost some fresh, china post, and I always offered to send me back or refund my money.
I did not expect this from a trader from U.S.