Are these good gaming computers?

Which is the best among these and if there's a good computer that is cheap in the list please tell me, sorry for a lot of links i'm sorry l rate 5 star for very good answers! I just want to play games like minecraft, etc

1. Http://www.ebay.com.au/itm/230957794683

2. Http://www.ebay.com.au/itm/290627439089

3. Http://www.ebay.com.au/itm/121252229497

4. Http://www.ebay.com.au/itm/360715740375

5. Http://www.ebay.com.au/itm/290958545976

6. Http://www.ebay.com.au/itm/230956655188

7. Http://www.ebay.com.au/itm/230956655137

8. Http://www.ebay.com.au/itm/230998974096

You have got to be kidding!

You expect us to go looking at these 8 machines and evaluate them all for you?
Do this, determine the most demanding games and programs you plan to use and then look at the recommend hardware for those and perhaps some benchmarks with those applications to determine the hardware you need. Use that as a guide to determining what you need in a computer and then do your own homework. I suggest that you use some web sites like maximumpc, overclockers, and toms hardware to help your search.