Make sure the car has clean service records, no accidents. I also think that price is about $10k to high, seriously. You can easily find that car for 22k-24k. I have seen many '00 540's go for less then that price. Check out eBay and autotrader, you will find way better deals.
If that '98 was perfect the most I would pay is $25-26K.
Things to look for.
Missing pixels from the cluster
I used to own a 540 so just ask if you have any other questions.
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