$135 for a key + $450 for a Nanocom = less than $600.
Got the eBay fob in the mail today. Despite the comments in the BCU docs saying you must use the code from inside the case, you can still use the 6 hex digits from the paper tag to program the fob as shown in this BBS video...
[ame=http://www.youtube.com/watch?v=JnrLrzMnANA]Disco 2 Key programming - YouTube[/ame]
The CE 0165 is a compliance number that means the fob meets several EU specs for short range devices, but doesn't actually specify a frequency. I guess you'd need to sight a 315Mhz key to know if it's a distinguishing feature. 315Mhz keys were primarily for the US market, so it might be that they carry different approvals?
cheers
Paul

