Potential New RZR Owner Questions

I am going to look at an 08 this weekend. Iv read all the scary stories here with the intake. It has about 700 miles. If I pop the filter off and look in the throttle body and see any dust just forget it?

Anything else to review? Im familiar with my quads, Prairie/KFX700 etc but never owned/maintained a sidexside.

Can one apply an extended warranty to a used RZR?

Its an 08 with:
warn winch
bikini top
front/rear bumpers
rocker bars
full windshield
$7500

Price seem reasonable? Im totally open to some thoughts - comments - suggestions.

Thanks