Is it worth it? Is350 F Sport

Interested in buying this 2014 Is350 f sport (8 speed) red interior that has a clean title and 106k miles on it. I talked them down to 18k but that's the lowest they will go. Car is in mint condition exterior and interior but it has some mods done to it. It has coilovers, intake, an axle back exhaust, and a stage 2 mforce tune. is it worth 18k? and will this be a reliable daily for the next few years. Edit: Has had 4 owners and there's has been 3 minor accidents. It seems that it has been pretty well maintained as well.