Calling All Mercury Techs...Again?

[BuilderFL]

Well my 1980 Merc 200 is shot and I will be breaking it down to sell parts on Ebay, so if any of you guys need any parts, let me know and will work something out.

Now, I'm looking to buy a 1998 Mercury 200hp for $2,850 and need your help once again.

Most important is what's your opinion about this motor?
Is this a fair price or what should I offer?
Is there way to tell the hours on this motor?
Anything in particular I should be looking for?
Is the oil injection a good or a bad thing on these motors?
What's an acceptable compression?
Best way to check for sparks?

Thanks again guys.