For unlimited tracks its 48 or something like this.. In distrokid its 20$ for the same thing.. Like u have some complaints about Distrokid? I dont think they have a mastering system or anything like that...
I mean. As far as complaints go I have none as I've never used it. At most, I've heard from users that Distrokid might reject your releases due to "editorial discretion", which might mean a smorgasbord of things (poor quality recordings, song publishing flood etc), but I think stores have their own prerrogative on whether to publish music or not so it might happen to other distributors as well.
When I was getting started with music publishing, it just turned out that Landr was recommended to me as a mastering service, and then I realized they were also able to release tracks to digital stores. The prices were more reasonable than my alternative at that time (CD Baby) and the community seemed supportive, so I ended up sticking with it.
I do wish they'd e-mail me saying "X$ has just been deposited to your LANDR account on day MM/DD/YYYY" or something though, that would save me a bit of work during tax reports for my country ;p. At least they provide you with statistics and an excel file with all details from your earnings