What is the best way to shop on ebay?

[Steve]

There are few formats of purchasing from eBay, such as Auction-style format, Buy It Now Format, eBay shopping cart, Classified Ads and Motors Classifieds. Auction style format is time consuming as you need to wait until the listings end.
The quickest way to purchase from eBay is to follow the Buy it now format. You can buy the item immediately at a fixed price. This can also be an option in auction-style listings. If a seller offers this option, you'll see Buy It Now in the listing and search results. Benefits of purchasing this way is that you can buy the item right away.

Or you can choose the other way of entering a price you’re willing to pay and, if no one enters a higher price that THEY’RE willing to pay, the item will be sold to you.

However, Before you bid on a product, put its brand and style name into Google and make sure it’s not being sold elsewhere and/or for less and only bid what you can afford to pay.