Neighbor offering me a deal on LX570. Should this rust be a concern?

My neighbor has a 2009 Lexus LX570 that he never drives and just wants it out of his driveway. It runs great with no issues, but he moved to the south from the northeast, so the rust damage has already been done. it has 140k miles and he's offering it to me for $20k, which is a great deal unless it's about to fall apart due to rust. How concerned should i be about this rust pictured ?