You can browse for items, buy as a guest using Buy it now, but to bid on auction-style listings and sell items on eBay you need to register. As a member you can:
Bid on auction-style and sell items.
Track up to 200 items at a time.
Create reviews and post to our Community boards.
Use My eBay to manage your buying and selling activities.
When you're ready, you can register
to become an eBay member.