Auctions are used servers. We had a few in the past.
Non-auctions servers can also be used servers, they are just newer plans.
Hi nawwar, I just wanted to confirm that what Julien said above is correct. Auction servers are definitely used, while non-auction servers can also be used, but they are newer.
For a slightly more in-depth answer, I'll just say that we tend to update our server models every 2 years. This means that at the start of such a cycle, all of the servers are brand new, since we just built them. By the end of the 2 year cycle, most of the servers will have been used.
For our current servers, we updated the EX and PX server models around 6 months ago. This means that while there is a good chance you will get a new server, this is not something we can guarantee, and you could also get a server that is up to 6 months old.