Well, recently I've been talking to some authors who are published with this publisher, more so out of curiosity than anything else. Well, so far, unless they aren't being honest, none of them are really complaining. From what I can see they really like this publisher, and I asked about sales, payments, and etc. One author I didn't get a chance to really ask. One said her sales were pretty good; she said it's up to the author to do promotion although the publisher may help out a little bit. Sometimes other authors help promote each others work.
The same author said she's paid on time and everything. So, that's good.
The only thing that I saw that is a bit of a red flag is the fact that they consider themselves a family or something similar rather than a just business. So, that might be something to watch for.
Other than that, the authors basically said they liked their experience with them. I have a few more I should probably contact though just to get a full idea of everything before I fully keep them in mind.