[erroneousfunk]

In addition, the package (listed on the USPS documentation) didn't have the correct weight, which should have been further proof that something was wrong. The package was 8oz, the lens itself, even without packaging, weighs 3.2 pounds.

[ChuckMcM]

Yup that seems like it, everything needed to prove that the transaction was fraudulent on the seller's part is included here by third party sources. Amazon completely blew it.

[incompatible]

So it seems that as a buyer, if you receive the wrong item, or the item is delivered to the wrong address, Amazon will do nothing. I'm not sure why the seller went to the trouble of sending to a different address, but didn't bother to bulk up the mass.

[ChuckMcM]

Technically, this also comes under Mail Fraud which is a federal crime[1]. This suggests that our author should contact both the FBI and the postmaster of their town because someone is using the Mail Service to commit their fraud. And as the latest rounds of advertisments from the Post Office state, "When you use the mail to do your business, it becomes our business."

[1] https://en.wikipedia.org/wiki/Mail_and_wire_fraud