Yes, I filed a dispute with Audiogon and they suspended the members account and encouraged me to leave negative feedback, which I have. I was a bit annoyed at FEDEX for not making this clear when I shipped although I do understand and sympathize with their policy. In any case I've now learnt my lesson, if I can't find a buyer in the US then no sale!
Problems with shipping to Canada
I checked the Forums but this topic doesn't seem to have been addressed before so potential shippers to Canada take heed. In June I shipped an item to Canada by FEDEX where the buyer had agreed to pay shipping and be responsible for paying the import duties. However FEDEX has been unable to collect the fees from the buyer and have informed me that as shipper I am ultimately responsible for payment. Luckily the amount I'm out of pocket is not large ($120) but I just wanted Agoner's to be aware of this possible pitfall especially if shipping high-value items