RNMB

The car is hard to start. I found oil on the tips of all the sparkplug. When this happend to other cars we have in our family, it means we need new valve cover gasket and spark plug gasket. I thought this is the same so I went to the dealer to get them but they said 90 model doesn't have any sparkplug gasket. I was???? then what does it have? What to I do to deal with this problem. They said "nothing.. rebuild engine.. or maybe O-ring". I went to the service department and asked. The guy said "I don't know. Wait till weekdays but maybe rebuild engine is correct". How much it cost? "proximately $8k. What? ahhhhhhh $8k? Cost more than the car to rebuild it's engine?
Anyone know what going on? Any fix?
I really need it fixed quick.
Thanks in advance.