My first year this year and I am some where over $5,000. That is including my heli fleet and the $1,200 I have invested in a 1/4 scale DR1 I am building.(about 1/2 of that money came from selling some of my high power rocket stuff)
My wife doesn't complain because she gets to spend what she wants on her hobbies.
On the plus side I quit smoking a year and a half ago so I am saving $200 a month right there