where he lists sources for his control surface parts. He noted that divineo.com had cheap LCDs (the link on the wiki pointed to a discontinued SKU, however) and I was blown away to find this:
20x4 STN Gray. Positive. Transflective. Green Array LED Backlight. $0.94 ea
from Crystalfontz CFAH2004A-GGB-JP
Shipping to USA (well, at least California) was $6.99 for up to 2, $9.99 for up to 5. So for $14.69 you could get five 20x4 LCDs.
Now, from the looks of these, and since Crystalfontz has since discontinued them, I would guess they are not the highest quality. Probably wouldn't necessarily want to use it for a finished project, but good for backups and or debugging purposes. Or, if you are on a super tight budget.
Edited by woolsey, 02 March 2011 - 10:07.