This is definitely a SCAM
Information about inquiring person:
Good day, i saw your advert a car for sale i have interested in the car, kindly give me the last price for the car.
I did reply, then he writes:
Hi, I have seen price and the details of your car, and I have interested to paying for the car, I want to let you know that am paying you with a cashier check with authentic that after three working days you cash your Fund..kindly you are able to let me know . So, I will like you to send me Your full name. Your contact address and your telephone number. Postal code... I will be waiting for your reply so that the payment can get to you as soon as possible. I want you to get the advert off for the characters of the two parties as regards all documents and buyers, to say that the car is sold.
Can't believe these people. Total scam.