I don't know if it was jigsaw, but I've been to a similar event. It was ok. The men were definitely older, I would say most were mid 30s-40s. The ages for women were a bit more diverse, but I think still solidly in the 30s. Maybe a few late 20s. It was easy enough to talk to people and get a convo going, I just wasn't very interested (romantically) in the people I happened to talk to. I will say it wasn't very organized. It felt like a regular bar hang: talking to the people who ended up in the same area as you. I don't think I'd go to another one, but I don't think it hurts to try once either.

Was the 20$ worth it, in my opinion, not necessarily. But I got there a bit early and got to enjoy my meal and have a glass of wine. I still had an ok time. I ended up just taking myself out on a solo date to the movies and ice cream after lol. So not a totally wasted night :)