I love it when I read something saying what an "inexpensive" sport running is. "All you need is a pair of shoes" they say.
In the past week alone I've bought new shoes, a running hydration backpack, 3 pair of special running socks and a bunch of gels. I've also registered for 3 races, although one of them only required a "donation". And believe me when I say I've held myself back from doing more.
I've got a shelf full of running books, a stack of shoes for different types of workouts, an entire dresser full of all manner of racing shirts/pants/tights, special underwear, a Garmin (GPS), several types of hydration carriers, a plethora of first aid or preventative items, an entire shelf in the kitchen full of all kinds of running food & drink....the list goes on and on.