Ebay is a great place to unload your bags. Only thing is, they are going through some massive policy changes that greatly affect sellers. Take a look around Ebay's Policy announcement page and our own Ebay subforum for further details.
If you haven't really sold before, I suggest selling some stuff around the house first to get your feet wet. There are just so many nuances to Ebay that it's best to have a couple of "practice" auctions first on smaller insignificant stuff to get to know the system better. This will help you better prepare for listing higher ticket items later on.
Here's a run through of some seller stuff that is good to know:
In order to be covered under paypal seller protection policy (SPP) you must ship to a confirmed address. Only the US and certain Canadian and UK addresses are eligible. Selling an item over $250? SPP mandates that you provided Signature requirement on your shipments. Build that into your shipping quote when you are listing your item.
To ship Internationally, only accept Postal money orders to avoid any false claims of non-receipt by Paypal. Send the item with some sort of tracking (USPS global express includes this) so that you can give a status update of your item in case the item is held up in customs. Let the buyer know that the cost of the item does not include any customs fees incurred.
If for now you are only trying to sell within the US and are just making an exception in this case, try changing your personal settings in Ebay to block bidders with a non-US ship to address. If you do want to make an exception, there is an exemption block list on Ebay you can add the International bidder's name to.
Also, in Paypal under "payment receiving preferences" you can block non-US payments as well. This is to ensure that International buyers don't "accidentally" pay you with paypal.
Need boxes to ship and are using USPS priority mail? You can order them free at usps.com!
good luck with the purge and keep us updated!