My recommendation, if you want to pick up a physical computer, is to travel to a retrocomputer convention (the season's starting up soon). I started into Amigas last year by getting a working A1000 and genlock for about $50 at the VCF in Georgia, much much cheaper than it would have been off eBay, amibay, or even scouring craigslist for months.
Plus, they're just a fun environment to be at
