Also windpipers is in the good ol' USA     

I was going to offer advice, but it's not applicable. 

These are the Australian boards, windpipers.

Davewil, that is completely logical... and if sellers were thinking with pure intellect rather than intellect and emotion, it would be realised more readily. Yet even when it's explained, it is hard for a seller in that position (sold item, buyer makes claim - probably false - and eBay forces a refund) to feel that they've only lost the item and the applicable fees.

I suppose it's because once one gets money into one's hands, the inner "mine, mine!" kicks in, so when that money is taken away, there is a cruel sense of loss.

They lost the item and some fees AND POSTAGE.  Oh, and some time.

Yes, apologies! I should have mentioned postage.

I also don't minimise the loss of time and the expenditure of frustration, but it's hard to put a quantifiable value on that.

I had a $399 credit card chargback. They said it was an unauthorised charge.  I dealt with paypal directly, and did not rely on the online process alone.  I called them three times and emailed them proof of receipt from Australia Post, then called them up to find the email and attach it to the file. I got the hold removed. I have found, that if you call them you are more llikely to have the results in your favour.  As a seller, you also have paypal protection.

As a seller you have no say in the matter.  The Plus is added to your listings by ebay if they decide the listing qualifies.

Only the buyer can decide if they want to be a member and pay for the privilege.

I've had the same problem, I charge postage but have qualified to be an ebay plus member.  So some of my sales from those listing don't include the postage cost which I have to cough up so there goes my profit. I've contacted them twice and been assured that ebay will refund my postage but one month later still no refund. Had anyone received a refund from ebay in this situation?

It is my understanding that the seller does not lose money if the buyer uses ebay plus -  if you item is offered as free postage in the first place, it makes no difference to the amount you receive

Someone else may know more.

Also, ebay only should put ebay plus on items that have free postage and 30 days returns.    So I never offer free postage or returns

eBay Plus Criteria*

As a seller:

• Above Standard or eBay Top Rated
• Compliant with our selling policies

For your listings:

• Item location and return address in Australia
• Fixed-price format
• Item isn’t heavy or bulky

Postage and returns:

• Free domestic postage**
• No additional postage charge for multiple items
• Accept 30-day+ returns