Authentication of Watch

[ja-823182]

Hi. hope someone can help

Ive sold a watch for a large some of money but I'm expected to send via special delivery (which only covers £750 to the authenticator) before I  receive my funds.

Is this right?

[tobiasd4]

When buyer pays, you get link to post item to Authenticators.

This is paid by buyer at checkout under P&P.

https://www.ebay.co.uk/help/selling/selling-tools/ebay-authenticity-guarantee?id=4644

[ja-823182]

Thanks. I know but my concern is that I'm send a 15k item that's only
covered up to £750.

[ja-823182]

It's saying I have to pay £11.45 for postage label