I suggest you look at the parts/surplus side of computer repair online. Next, try eBay of course. Last, check POS vendors which I'm sure carry small monitors or even LCDs of the size you want, rebuild or new.
The above may have them now and then, supplies do vary as they become available. Search for other vendors, hope it helps.
I'm trying to find a very small computer monitor for cheap. I'm running an old desktop as a wireless print server but using the 19" monitor I had hooked up to it as an external monitor for my laptop at work. I would like to get something between 5-9 inches for less than $100, but can't really find anything... it's all either for cars or touchscreen or something like that.
Any ideas or questions?