I bbfs more than anyone on here. It's not that common. On leolist I'd put the percentage as 2-5%. Lots of scammers on there who will say it over text but you get there and don't even get a bbbj. At the Asian bait and switch places there might be one or two girls that do it, and by girls I mean grannies.
The most common bbfs on leolist are methheads from Durham region.
I don't bother with those anymore though because asian agencies have hot girls openly offering bbfs. Worse case scenario, they're a bit ugly and smell like old rice and eggs, but it's good tight pussy.