[bbob]

f300 it's as you say, only when using ups fedex and those you can expect to pay 50$ or more for an enveloppe. but these all have track and trace and delivery worldwide is normally within days, maximum a week.
Regular air mail even the one you have to sign for does not cost more thatn 10$ and should be delivered anywhere from 3 days tot max 2 weeks.

Both options give the sending company proof they have sent it and if you signed for it. If it takes longer that the shipping company made a mistake of the sim was lost stolen, whatever.

In that case like you said they should have sent another one. Let's give them maximum 30 days to deliver, if not any you paid by credit card you just request a charge back and the deal gets investigated. In that case the sending company has to proove to visa that the item was shipped and received by you. If they can show proof of you signing for the package they don't get their money and you don't have to pay.

This should be a warning to everyone. don't let those companies screw you around, give them 30 days than charge back and get your card from somewhere else.