This was a really great kit for a very fair price, especially considering the shipping from across the pond. The PCB was really well made, and when combined with the instructions made assembly nice and simple.
I did have a few issues, though they were very minor and not enough to meaningfully impact the rating. During assembly there was a minor issue where the RGB LEDs and the 5v regulator had a narrow pin spacing, so during soldering my clumsy hands (and likely poor technique) bridged a few of the pins. Fortunately those are easily fixed, so it's not a big deal. I also think that the the neon bulbs sit too low relative to the numbers, so I ended up having to raise them up a bit which was a bit annoying. Lastly, my kit didn't come with any of the 6x2 pin headers for plugging in the QTC modules, so I had to scavenge a handful of 6x1 headers from my parts bin. Again, not a big deal, just kind of annoying.
All in all, I'm super pleased with the kit, and the resulting nixie clock goodness.