" There is NO valid reason to firmly refuse 
shipping overseas using normal postal services. "

For me there is.  I put delivery confirmation on 
every single cel / package that goes out.  I 
don't charge for it, for my peace of mind .45/.55 
is worth it.  I can go online (so can the buyer) 
and see where the package is & when it was 
delivered.  

I put insurance on every package.  I do charge 
for this & for the US it starts at 1.30$, which 
is reasonable.  

For my /personal/ sales I will sometimes ship 
other ways if the buyer really insists on it.  I 
give this little disclaimer saying that by 
requesting this shipping method they understand 
that if their package gets lost/damaged in 
transit I am not responsible & I will not be able 
to refund their money.  

However, after 10 sales went bad on eBay because 
of non-insured packages (and I pack very well in 
my opinion) I decided everything goes out 
insured.  Period.

I have been to the post office enough times to 
know that as of right now, there is NO tracking 
system for packages other than EMS.  I pay EMS 
all the time for Japan.  Some sellers offer SAL 
but I have never used it.  You can insure air 
mail (and I assume global priority) but there is 
no way to track it.  It then becomes a "I 
said/you said" situation on whether I actually 
mailed a cel if it gets lost.  I keep the 
receipt, but my receipts only list countries, not 
zip codes / province codes.  I have no viable 
proof that I sent the cel to them, not just a box 
of cookies to my aunt Grizelda who happens to 
live in the same country.
Thanks,
Anna