I live in San Francisco and only use USPS....and have used it for registered mail.
First of all, "registered mail" is for International shipments.
I am thinking the buyer is asking for "certified mail" which is for domestic shipment...and you can get signature confirmation with that...4 pounds seems heavy. You need to ask for written signature confirmation and not digital signature confirmation...cost the same. I am not getting a good feeling of this buyer.
Maybe inquire about an "adult confirmation". No customs form needed for domestic shipping. There is a tiny form to just fill in the address for certified mail.
Normally I would just send your 4 pound package in a box and ask for signature confirmation through USPS. Not sure of the dimensions of the package but if you can put it in a Priority Mail box which is free at the post office...you will need your own tape. Can pick up box anytime for free. Insurance for $100 is included.
This is what I do when I have paper things to ship...very hard box. $10.20...
You can't do registered and certified...4 pounds might be too heavy.
Did you notice some responses here don't know what "registered mail" is?
I'm not sure I understand everything you said, this buyer has always asked for priority mail with signature in the past now he is asking for registered mail in a box with signature. I just go off the phone with Stamps.com and they walked me through the process of registered mail with ground advantage at 4 pounds with signature confirmation and it came out to
$30.32. However this is their discounted rate they did not tell me what it would cost if I went to the post office and shipped it their. Should I just add about ten percent to this amount? Would that be enough?
