Finding this part is proving to be harder than I had expected, due to the lack of full-parts merchants.
If you have a broken PS3 you are considering selling on eBay, please take a moment to consider removing it's BDROM-to-Mainboard flex cable. The cable's value is only $5, but I'll pay up to $20 for it.
I cannot justify buying an entire broken system for $100+ just for this $5 cable, but if you have one, it won't really effect your sales if you sold the ribbon cable seperately.
For clairity, here is a link to my eBay WantItNow post, as well as a picture.
eBay WantItNow Post