Just a few weeks ago this 3.5" HDMI LCD EVF was posted on this blog, and now that a few other resellers are carrying the item it looks like it's dropped down a bit more in price starting at $239 (or make an offer).

It's not the greatest EVF on the market and lacks many features of higher end models, but If you would like to see a video showing some of the features on this particular EVF, you can reference the original post (here). More of these 3.5" HDMI LCD Electronic Viewfinders are available via eBay (click here)

3.5" HDMI LCD Electronic View Finder