Insuring cards via UPS or Postal

I remember a post stating that certain shipping companies won't shipped cards insurred. Is this true? I want to send a set worth $5500 and want it covered.
Thanks for you help
Thanks for you help
0
Comments
Robert
Any high grade OPC Jim Palmer
High grade Redskins (pre 1980)
Registered mail must be shipped in a box with ALL openings taped with that brown paper tape you have to moisten yourself. Forget the exact name of the stuff.
Our PO has it for customer use as well