All of which has nothing to do with the price of tea in China. You have to compare apples to apples. US$1000 will buy you a lot of computer, multiple cores, gigahertz speeds, etc. Sam's specs compared to what you could buy in an AMD or Intel system are a joke. SAMs specs for a thousand US dollars look good in 1999, not 2009.
Adding to this, the original poster should factor in that at least some of those Amigas were considered cutting edge (at least in some respects) for their time. I'm wondering how a sam would compare performance/featureset-wise to to an Intel Atom netbook, let alone the mainstream.