Broken Lamp Designs

Setting the time is both complicated and not. Download, unzip, and run a small utility. Connect the clock via USB. Source code is included. Small Utility

One changes the LED mode. There are a number of lighting effects and colors. Pressing the button cycles through them or turns them off. The other button sleeps the clock or wakes it up. In sleep mode the nixies and LEDS are off. Saves power and extends the life of the tubes, also reduces light pollution.

Short Answer: By all means.
It's yours, do what you want with it. All source and designs are released under the GNU Public License V3. You can muck with it all you want. The clock is based on an Arduino Nano Every, so modifying how it works is pretty simple. Here's everything you'd need: Arduino SketchArduino IDEGerber PCB FilesPDF schematicBill of Materials

There is none. This clock is built out of Soviet-Era parts sourced second-hand. It's sold as-is with the express understanding that if you break it, it's not our problem. We're not heartless though. If it breaks and you really love it but can't repair it on your own, we'll help out, but it will cost you. Shipping, a flat $50 repair fee, and parts will be your financial responsibility.

Yes. Every 5 minutes it runs a quick cathode conditioning cycle. On the 10's of the hour it flashes the date. Finally after 2 hours it puts itself to sleep. That's it.

Nixie tubes are an increasingly rare and expensive commodity, thanks to being out of production for 30 years, and a large base of enthusiasts like us and yourself. Then there's the cost of the rest of the parts, PCB manufacturing, factor in the time it took to design, prototype, and final assemble these things. No one likes working for free. Add the base; Wood is stupid expensive at the time of this writing. It all adds up.