I've got a 2010 era Acer Aspire One netbook. It cost me about $250 when I got it, and you can get them for under $200 now, but I also snapped it up back when they came with an actual hard drive. A 150GB optical drive beats out an 8GB SSD when it comes to space no matter how you cut it.
I've used it mostly for low spec games and miscellaneous browsing over the years, so I could never justify an upgrade. Of course last year Microsoft cut support for Windows XP so that got me looking, not very seriously but looking, for something new. Luckily I discovered The Way Of The Mustache in the interm and put that idea on the baxk burner while I sorted out some more pressing issues.
In the end I decided that although my computer was bogged down and bloated it didn't necessarily need to be replaced. The hardware was fine, it just needed new life. So I took a few hours out of my evening, made a Xubuntu boot disk, and went to Linux. So far no complaints. And I don't anticipate any, considering I'm making a concerted effort to be more serious with my computer time (blogging, working, research) than I used to (gaming, frittering about, assorted foolishness).