Are you referring to a XENON Halogen bulb (with filament) or the XENON HID (Has a ballast and no filament). If you are referring to the HID ones, they should last longer than 200ks, unless of course its one of them cheapy ones from china which is most likely the ones people would be able to get their hands on. They are available on ebay mainly from Hong Kong some of them are very cheap while some of them are average and some of them are more than what people are willing to pay. If you were to get them from another car such as the Aurion expect to pay top dollar for one, if you got one of them cheapy china ripoff ones they do have spare bulbs on eBay aswell for about 30 bucks I think.

If you are referring to the XENON Halogen bulbs something must seriously be wrong if they blow at only 200kms.

Dave