I think that eBay seller is located in Israel. I came across his listing too so I'm not sure if Texas9 is from Israel. In any case the prices are okay ($9 + 4.50 shipping = $13.50 USD) compared to paying the typical $20 USD from the LBS but this is one of those things that you should just buy from your LBS. It's not super expensive, it's tremendous insurance if you're out on the trail and you are supporting your LBS. Besides, if you need it NOW are you going to bother with the $6.50 savings while waiting for the package to come all the way from Israel?

As for compatibility for the Konas, you can find this information out from Konaworld.com:
- This PDF tells you what hanger code you need - http://www.konaworld.com/tech/pdfs/2K5HangerGuide.pdf
- This PDF tells you what each hanger code looks like - http://www.konaworld.com/tech/pdfs/hanger_guide.pdf