Whether you make a living from buying and selling on eBay or you merely sell off your basement junk when it gets too crowded down there, iSale is a fantastic eBay client that merges the wonders of Mac OS X with the world's leading online marketplace. Offering beautiful tempaltes, WYSIWYG auction composing, integration with iCal, Address Book and iSight, a Dashboard widget for monitoring auctions, Google Maps and worlds more, iSale has everything you need to get your eBay on.
Like so many other web-integrated Mac OS X apps, however, iSale was hit with compatibility issues if users installed the Safari 3 beta. Fortunately, a couple of recent updates have fixed those issues and added over 30 new templates to bring the grand total to more than 200 different auction templates, organized by category. With a wide variety of template styles, imagery and layouts, you'll be hard pressed to not find something that'll fit just about anything you post for auction.
This most recent v4.2 of iSale is a free upgrade for registered 4.x users, and a demo is available. A single user license costs $39.95, while family packs start at $49.95 and go up from there.