Don't know how familiar you are with the Boston area (I've lived here all my life) but Weston has *always* been the richest town in the area,so he probably paid very serious $$$ for his house when measured by the price of real estate at the particular time that he bought it.
I grew up two towns over and while it was always a money town, RE in that area has seriously exploded. What used to be $600K back then is now double that, easily.
I would say that Remy is easily making over $250k a year doing what he is doing.