I purchased and received two of the mega stackable cases about a month ago. I waited to post a review right away to see how they would hold up. Since they didn't require screws or anything to assemble. And I just say, they're holding up just great!
These cases both look great, and are relatively compact. Plus the price per fig display ratio is leagues better than pretty much every other place I looked. Being able to hold approximately 192 standard sized minifigures. Just keep in mind that you would have to buy a baseplate to put in the cases, since they don't come with one. But I didn't mind that, it just ensured that the studs the minifigures stood on where authentic.
However, there were a few problems that I had while handling my cases. Firstly, some of the pieces would often disconnect when I attempted to put together other ones. For example, parts B and L would come apart when I tried connecting them to R and F. But I was able to put them together successfully after some finicking.
My second problem sort of relates to the first one. Whenever I would go and remove the acrylic case from the base so that I could put minifigures in, some of the corners would try to disconnect. Not completely coming apart though, so I'm able to just nudge them back into place. But if you aren't careful, it could cause the whole case to fall apart.
Lastly, and probably my biggest issue I've had, is that one of the cases' part T has sustained cracks. The first time it happened was the morning after I put together the cases, I noticed that one of them had a crack on the top left corner of part T. Customer service was gracious enough to send me a replacement part, that arrived in just a few days.
But just today, a few minutes ago as of typing this, the same case had cracks in the same spot, on the same part. My theory is that perhaps it's an issue with the parts on this particular case. Because my other one appears to be fine. I would feel bad if I had to ask customer service to send me another part, a month after doing it once already. So I'm going to leave it be and hope it doesn't worsen.
Aside from those issues, I've rather quite enjoyed these cases. And I even plan on getting a few more, hopefully sometime soon. So that I can display some of my other minifigures I have in plastic minifigure bags in a box.
