Worth to buy a 3 yr old Mercury motor with 900 hours on it?

[Johnny12]

Interested on a 3 yrs old Mercury motor with 900 hours. pricing is attractive, about half price of a brand new one. It was mounted on a commercial touring boat. When I come to test and run it, what should I be aware and pay attention? thx for all inputs!

 

[Blue_Sky]

Interested on a 3 yrs old Mercury motor with 900 hours. pricing is attractive, about half price of a brand new one. It was mounted on a commercial touring boat. When I come to test and run it, what should I be aware and pay attention? thx for all inputs!

Do you like to gamble?

 

[faztbullet]

What HP? Got the printout? Where did most of these hours occur?