Well Ed, I buy and I sell stuff so, I'm on both sides of the fence, I selected the 3th option from the top, and that is to me, the most reasonable of them all however, I don't think that any one policy will please everyone...!
As you will be well aware, anyone with an eBay store has to provide a refund policy for each listing however, some folks think that, they can decided what they want to do/have done, if things don't go their way, regardless who's fault it is...!
Selling internationally can add a few extra problems to the mix, first in the time that takes the item to arrive and secondly is the time that the buyer take to make their decision.
I believe, the return shipping costs are the buyers responsibility, and I believe reasonable that the customer would be given 2 to 4 weeks to make the decision from item arrival time. I don't believe that, an item should wait 6 months, 1 year or more, before the return is even considered, and I can tell you, that I have had that done to me as a seller.
The item should be in the same condition as sent by the vendor (exception do apply when items are damage in transport...!) and extended time at the buyers location can possibly allow the item to become deformed in some way. Certain items are not made to be put away and under extreme conditions, such as, under heavier items, be exposed to extreme heat or cold, be thrown around and not looked after properly, those extreme conditions can very easily interfere with the blank integrity, particularly if the blanks is made with a mix of various materials, the most common being warping, cracking and "separation" so, I would expect to make a refund claim if I had a good reason for it, within 2 weeks max, 4 weeks...!
Coming back to international buyers, the normal return policy is that, the buyer pays for the return shipping, and when they realise that is going to cost them, sometimes more than what the item is worth (but not always), they don't agreed and demand that they get full refund for something they received matching in every way, what was advertised that they didn't care less in reading, and all of a certain, the threats start coming.
On eBay, the negative feedback is normally used as a tool to get what
"they" want, off eBay the media such as forums, Facebook, Twitter and many others are used to tell everyone, how nasty/bad/unfair/ruthless, etc, you are to deal with, if people reading don't know you, they will take this person word over any other, and we all know the troubles that can sometimes, cause.
Store/Vendor return Policies to certain people, don't mean a thing, they have their own ideas to what they have the right of/to and if isn't suitable to them, they will dispute it, until the cows come home. Deal with these people take a phenomenal amount of energy and patience, sometimes, not always, I refund the full amount and either pay for the items be returned or simply forget about it and let them have it, just to get them out of my face however, it can go the other way around and they get nothing if they are not entitled to and, I make sure their name is "blacklisted" so that they can never buy from me again.
As a buyer, and I buy almost everything online, through eBay or not, I do not hesitate to make a complain if I believe, I dion't get what I paid for or simply, the items is faulty or similar, I never had a claim for refund, replacement or credit declined, this may have to do with one of my life rules, which is stated on my IAP signature, that simple principle has taken me a long way however, we are all different and some people are just mongrels, by nature so, how can you fix "stupid"...???

:biggrin:
Good luck,
Cheers
George