Hi Koala,
Im under the impression that Crossfit is one of the cheapest forms of excercise going. I pay the equivalent of 90 pounds a month where I live, its an expensive part of the world, so I just googled and it seems its a pretty standard rate worldwide. Im paying in local currency what people are paying in the States and slightly less that people seem to pay in the UK. I can attend unlimited sessions.
Is it cultish? No, absolutely not. Im a very ordinary granny to 6 and I'd have nothing to with anything resembling a cult. It would scare the living daylights out of me.
Is it cliquey? Again - absolutely not. The ethos is based on being friendly and welcoming to all, that if you see a stranger in your Box you go and welcome them and make them feel at home. We have holiday makers coming to our Box and we exchange t-shirts with them and have pictures taken for the wall. And thats the beauty of Crossfit - you are supposed to be able to go anywhere in the world and fit right in.
Are there lots of injuries? Id also heard this said but I can't say Ive found it to be true. There are no heroes in the Box I go to and safety is paramount.
Is it hard on your body? I started it 4 months before I was 59 and I haven't felt so well for ages. Ive had no injuries and because I love it so much I only ever do what Im allowed to do. If I'm told during one of my PT sessions, thats it for the day, I listen to my coach and I never say oh please lets go up a weight. He knows what he's doing - Im still learning.
I cant stress enough how this has changed my life and to be honest I didn't even start going to the Box to do Crossfit. Some of my children are serious Crossfitters and they arranged for the coach to do personal training with me in the hope I'd be fit enough to do a Spartan Race in 2018, the year Im 60. Well, after a couple of months I said - I want to try this and ............ 
Next year Im hoping to do a Spartan Race but Im also hoping to take part in the Crossfit open doing a scaled masters for people my age. If I managed just one week, and Ive already managed one week this year as a wee practice after the open had finished I'll be really happy. Im really pleased with myself - big fat granny of 6 that I am.
Oh and I have terrible osteoarthritis in both knees. Stage 3. Im one stage away from needing knee replacements but even so I can still do Crossfit because I went had had injections of Synvisc One into my knees and I'm now like a spring chicken.
Mu severely disabled son is also a Crossfitter, its all adapted for him, and there is no way I'd be allowing him to go to Crossfit if there was any chance he'd be hurt.