It all depends on who you are buying from. Some places offer insurance or full responsibility on their purchased items, and will return your money/send you another one if it gets lost or stolen during the mailing process. While others...well, if it gets lost, too bad.
My mom is a postal carrier and many times she'll have people coming up to her saying she never delivered her their package when she didnt have it in the first place . From her experiences, I feel that it's wrong to blame the post office and just randomly yell at their service. Every system is flawed and there's not much we can do about that.
I guess the best way to securely get your packages is to pay a lil extra for the insurance, if offered.
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