I own a Velka 7 case. I have heard that the 3 is similar. Build quality is mostly very nice, but the paint scratches and comes off around the screws. I’m currently running a 2.1 slot 280mm GPU along with two 2.5in SSDs. That is really nice to have in such a small case, but it does come with its drawbacks.
Most notably, the case is very difficult to build in. The front panel must come off first, with 4 screws. It takes 12 screws to remove the side panels. The system needs almost a complete disassembly to remove the GPU.
If anyone has questions I am happy to answer.