Just two cents from an eBay power seller gal ...
You should definitely consider getting a PayPal account. It's really easy to set up, and it's a great insurance policy. The reason is that if you pay someone for an auction and they don't send the product, it arrives damaged or defective, or there's any other kind of issue with the seller or the item you purchase, you can do a "charge back" and very possibly get your money back for that item. However, if you only ever send payment via money order, you're completely out of luck if you get the wrong item, a damaged item, or even no item at all. Money orders provide no protection -- which is why a lot of sellers prefer them. Definitely try out PayPal sometime ... Not everyone on eBay is dishonest or looking to pull a scam, but those people are out there, and every little bit of protection helps!
Enjoy using eBay, it's a great place!