Gotcha. Dependent then on the "value" of item being shipped....

Gotcha.

Dependent then on the "value" of item being shipped. Example of container RFID tag.

https://www.gammasolutions.com/products/intermec-915-mhz-container-tag/

and their guide to selection

https://www.gammasolutions.com/wp-content/uploads/pdf/RFIDTagSelectionGuide_brochure_web.pdf

as far as costs .... retails at $11.80 for qty 1
https://www.barcodesinc.com/intermec/rfid-tags.htm

But FROM THE MANUFACTURER (Honeywell?) (my bolding)

How much do RFID tags cost?
Answer: Tags can cost as little as 10 cents or as much as $100 depending on the type of tag, the application and the volume of the order. Generally speaking, finished smart labels that can be applied to cases and pallets typically cost between 10 and 20 cents, depending upon volume. Active tags - those with a battery - can cost far more.

http://www.intermec.co.uk/learning/technologies/rfid/faq.aspx

Don't see cost per se being a real problem. On valuable cargo, the cost of a active tag would be a fraction of the cost of insurance.