Looking for thoughts or experience on purchasing an extended service agreement for 4 years, and $4750. My care is 27 months old, with 28 K miles on it. I own my car, and usually keep cars for 8-10 years. Would I be wise to buy this extended service agreement? Once the SA starts to be used, all visits have a $200 deductible. All thoughts appreciated, and curious how many owners have purchased this agreement?