Do you really have time to look through various eBay categories searching for the items you want to bid? It's easier to use a third-party tool to do the hard work for you. When you finally find the items you require, how many of us have the time to keep checking the status of the auction, whether anyone has outbid you and be there when the auction is close to ending (and when most bids are entered).
Prospector Lite 5.1 is a tool that you can use to track your various auctions and even set up a remote bid that will drop in to the auction whenever you require. The free version only enables you to check up to 30 items or searches a day, but that's more than enough for the basic eBay user.
Some parts of Atacama have not received rainfall for 500 years - but a sudden deluge of water upset the Desert's delicate biological balance
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Greenland crater one of the 25 largest impact craters on Earth
This long-sought progenitor star was identified in an image captured by Hubble in 2007