That was a shame. What do i need to get it? i thought i could emulate it
i suggest if you're interested in next-generation amiga computing, you visit a site that hasn't been taken over completely by whack-jobs and ask your question there, such as
amigaworld.net or
amigans.net. you can also visit the official
amigaOS website for a basic introduction or
intuitionbase.com.
there are loads of other sites, too. just search on the 'net.
now to try and answer your question directly: there are plenty of both new and used next-gen amiga systems which run amigaOS 4.x for you to choose from. among the systems shipping today include the
amigaone X1000 at the high-end and the
amigaone 500 in the middle. both offer good performance but are a tad pricey. moreover although they both support much newer technologies than any other amiga NG systems -- such as PCIe-hosted radeonHD video cards -- those cards don't currently have working 3D support, so you'd have to wait for OS4.2 for that.
other systems include the
SAM440ep-flex boards, which can be had new for under e300. those systems work quite well, but are quite a bit slower than modern PC hardware or indeed any of the other amiga NG systems. i have one, and really enjoy it for playing games, watching standard-resolution videos, and the like. web browsing is a bit poky, though, in my experience.
then you have systems from the previous generation of amiga NG machines. the amigaone XE is a good option, but you need to be careful. a few of these boards had hardware issues, so only purchase one if the seller is someone well-known in the community. a mini-ITX version, the micro-A1, is a lovely little board, but unfortunately you're limited to only 32MB of video memory, so using it with a huge display is a bit tough. and of course there is the pegasos2 board from genesi, which i also have. a good compromise and all-rounder, the G4-based board works great as a next-gen amiga and can also run linux, morphos, and even older versions of mac OS X.
you might find this
comparison table useful in your investigations.
lastly there was a netbook announced at amiwest last year which would ship for around $400USD inclusive; we haven't heard anything since, though, so keep your eyes and ears open as news from amiwest 2012 trickles in next month.
-- eliyahu