Welcome Pam
First thing I would do is check
here to see if the price is in line or not.
Second is check the date codes on the tires. They are probably the originals and are due to be changed.
Check maintenance records and see if the trans fluid and filters were changed.. Oil also.
Probably needs antifreeze change.
Check
NHTSA for any recalls and try to find out if they were completed. (If any)
Where are you going to be using the coach?? 275 HP will get you anywhere you want to go, but would be (to me anyway) a little weak if doing a lot of mountain driving pulling a toad.
If you just love the rig, go for it!! You are the only person who has to be happy with it. Spend time looking at it so that you are sure it fits you and the lifestyle changes you see it making.
Remember, M2M's coach is 5 years newer and probably has nicer bells and whistles.
According to
Monaco Archives it only has a 5000 Lb towing capacity, so that may also enter into your decision.