Now I've got our eye on this SLA machine, Droplit, an entirely open source resin-based stereolithography (SLA) printer soon to be offered by SeeMeCNC! It will come as a kit, although all the pieces (save for that one metal cylinder shape) are open source! The UV source comes from a DLP projector from which you will need to remove the UV filter. To cure the resin? A UV nail lamp from Walmart! Now, THAT's our kind of budget. You can read more about the Droplit on this 3Dprint.com post.
Finally, I wanted to acknowledge the Made in Space project. It's pretty incredible - they plan to send their first printers into microgravity on September 21!