Advice on Smart Roadster Purchase

Hello to the round. I’m looking for a “passenger car” right now and I hit the Smart Roadster. I already got an offer and wanted to listen to what I have to pay attention to. In the search I have already read that the roadster would like to leak and the maintenance is not completely without. I was offered, already 140,000 Km on the clock but first hand with checkbook, 82 HP, EZ believed was 2005. He should cost VB 3200 Euro from private. Is the price ok? Will the days visit the car times. Hope you can give me some advice. Thank you very much….