Seconding what MatthewG said, with one caveat about free bbw dating sites.
The measure I would actually check on free bbw dating sites is how the match quality holds up past the first day.
Gave the app a fair run over 6 weeks and kept coming back to where the paywall really kicks in.
Unless you're in a major metro, expect where the paywall really kicks in to be the limiting factor on the service.
Anyone tried free bbw dating sites on a smaller platform and got a different result?
I had a better run on Luvdate for this exact use case, for whatever that is worth.