I like to exchange items but the cost and the documentation effort to send items overseas has gone beyond the value of the covers I ship. I use EBay to dispose of extra items and use the proceeds to get more so it is like trading for me but I received too many complaints about items that were "lost" when I shipped overseas. I think there are some people in the postal delivery system that are too inquisitive when they see a package. I actually got one item that was suppose to be a bunch of car magazines opened somewhere along the route and replaced with a bag of flour. EBay has made there Global Shipping Program a preferred choice now so my listings are getting reviewed by overseas buyers where previously they were blocked because of my shipping location limits. It generates a lot of interest particularly if the cover originated overseas and was sent to the US 100 years ago. Some are willing to pay the high shipping cost because they want the items but other appropriately complain the shipping cost is higher than the item cost. Most of my cover lots I want to trade weigh about half a pound and are worth about $20. One of my favorite listings is 100 non US covers for $20. I know I would pay that for 100 US covers mailed to overseas locations year ago. In the US shipping for that lot is about $5, to Europe about $12 and using the EBay Global shipping about $20.