Yeah they would have been fabricated to fit I'm not sure what their worth I would have thought about £500 seeing as they are rare and even better they fit in a mk3
Well mine is leaking I heard its not a bad job but I wouldn't do it myself lol mine only leaked when car is running.as for it being bad it depends how much its leaking
It may be that drained that it can't get any charge I would try charging it outside the car and if that doesn't work I'd buy a new one. I would try another battery just so u know it is the battery at fault