Macintosh 128K
This was the very first Macintosh, the one that launched the long line of iMacs and MacBooks that we use today – and the computer famous for introducing Apple’s counter-culture advertising that worked so well during those early years. It’s a little bit of history that people are willing to pay for, with asking prices anywhere from $949 to $6,000. Interestingly, this is one expensive relic that may not always recoup its cost even if you sell it for thousands of dollars – as it originally sold for $2,500, an astronomical sum back in the mid-1980s.