www.proclub.com
$88.56 a month for me.
$60 a month for my wife.
another $50 or so a month in various lessons: rollerblading, gym boot camp, plyometric stretching class, etc.
another $50 or so a month in work out clothes or equipment.
In season, probably about $100-$200 a month in registration fees for races (most of these are tax write offs)
So I guess all that added up is about $2600 a year.