Purchase advice used Smart FortTwo

Hello dear smarties, am new in your community or wants to become it. Since I am a professional commuter (100km/day) I thought of convertible, economy and less value loss/a than with my family coach (C Klassebj 2008). I don’t really care about the km of the smarties, have 2 favourites. Important to me is: CDI, SHZ and Tempomat… What do you think of this? Too many km? A normal car diesel has just arrived…http://www.ebay.de/…/140934256524?… Would you be very grateful for your advice!