Man, I may be a bit biased, but I really think anybody who's wondered about it should totally try derby. One of the absolute best decisions I've made.
We're similar here (I'm in Atlantic Canada). Yes, you will have to get your own gear but general we try and do a gear lend for people to try it. And there's always people upgrading and selling off old stuff cheap. I'd ask around the league and see if there's even a regional used gear Facebook page/check kijiji etc. We have women of ALL shapes and sizes, ages, careers, etc. Not that its a cure-all for fitness (I gained weight through my first 2 seasons) but it is an amazing sport to be involved with. Anyhow, I'm always up for talking derby if you want to pm any questions
Today I think is a rest day from weights. My hamstrings were soooooo tight last night. Must get back on to foam rolling.