AnandTech has taken a look at the new X2100 server from Sun which is available for under $1,000. Here's a blurb from their test report:

Today is the first x64 server for Sun that is totally unlike anything else on the market. While today is also the mark of Sun's Galaxy server line, the SunFire X2100 model (code named "Aquarius") we are looking at today will become Sun's entry level sub $1000 server. Vertical markets will be able to use the Aquarius as a completely storage-less application node, while horizontal markets will be able to use the X2100 as a low cost, high density application or web server. We have some upcoming analyses of the Galaxy lineup but today we are very excited to bring the first look at Sun's entry level "Aquarius", or SunFire X2100..



Link: AnandTech