Hi all. Having decided to start using square filters, I bought a used Lee holder . After looking at where to buy a 77mm adapter ring I came across this on eBay http://www.ebay.co.uk/itm/231211306430 . It's clearly a good price even if duty etc to UK is added, so I wonder if anyone else here has bought one and what their opinion of it is. The seller's feedback is good, and the people who have bought adapters in various sizes all seem to be happy with them. Being Mr.Cautious I can't help thinking I've missed something obvious. Thanks in advance for any input.