I have been doing auctions on 2 or 3 different sites for the past five years.
I have found that all countries can have problems with "failure to deliver". I have lost items posting to just 30 miles away and to Australia and most points inbetween.
Most of my "losses" are small in value and represent less than one half of one percent.
For orders over £15 I insist on sending Tracked Signed For which costs an extra £5.00 on top of the actual postage costs.
I always get a proof of postage certificate from the post office so I can claim the postage costs from Royal Mail.(Sometimes they just send me 6 x First class stamps)
Once or twice with regular Stamporama customers we have agreed to credit them with the losses against future purchases.
It is annoying when something goes missing but I have met some very nice interesting people through this wonderful hobby of ours.
It also pays to be extremely methodical with your paperwork, so you can keep track of every order and payment.
I hope this helps you in your decision and the best of British Luck.

 
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I would agree with your wife as well (selling since 1985).

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Sent you a PM.

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