Thank you for your very helpful reply.

After posting and receiving various replies it does seem that eBay verification times are somewhat of a lottery. 

I have absolutely no problem in eBay doing authentication and verification of high value items. However, it is evident that there is a severe disconnect between eBay procedures and keeping sellers updated. And as for CS, I think beyond verifying your name and address their ability to offer any real assistance is negligible.

But as you rightly point out the money is there and going nowhere. I am sure a couple of drams of Single Malt Whisky will give me a fresh perspective.

Once again, thank you for your guidance.