I like it a lot. I don’t know how many example sentences free users get, but for paid users it’s 10 sentences per point. That’s almost 3k translated example sentences for N5 + N4 level content alone, most of which are voiced now and have vocabulary roughly restricted to their levels. I could ignore the SRS functionality altogether and still consider the whopping $3/month price tag dirt cheap just to read through those.
A long time ago I jumped around using Tae Kim, Genki, Human Japanese, Imabi, and probably a few others. I had a hard time making it click and without classes/tutors which also meant I didn’t really have any opportunities for feedback (rip partner exercises and such). It’s not what I’d consider perfect for my situation, but Bunpro more or less fixed that issue and the SRS system gives me repeated, tapered exposure to learned grammar. On my own I can’t really read native content fast enough to get “natural SRS” so that site really helps to keep things fresh for me. At least when I’m looking at native content my reactions have been much less “wtf is this” and more “oh right, I should have known that” or “ez”.
Like others have pointed out I find it way easier to search grammar on Bunpro than doing a google search. The reference pages for the points usually have a section with hyperlinks to related/similar grammar points which can be useful when mixing up points. For a person like me who is always at my PC anyway it’s cheaper and more convenient than buying a dictionary of japanese grammar.
The biggest flaw I’ve noticed is that like most other fill in the blank style resources it struggles when similar points can fit for a review sentence. They try to work around it by throwing out hints or by focusing on certain detail/nuance, but it’s kind of a waste of time for people who aren’t interested in speaking/writing.
Overall, I’m just much more confident in reading Japanese stuff now and I really owe a lot of that to Bunpro. It was the thing I needed to fill gaps in my studies, but it’s not going to be for everyone. There’s no reason to pick up Bunpro if other methods work fine for you, especially if you’re short on time.