Price: $20 (board only) to $56 (all components except tubes)
I've been looking for a new numitron clock to add to my collection ever since I got my Numimini earlier this year. While I was searching, I found a great kit from Richard White II for only $56. You have to assemble it yourself, but he has designed it in such a way that you can add any numitron tube you like. I have several DR-2000 tubes but I wanted to make something unique: end view DTF104B tubes. It turns out that Richard was thinking along the same lines I was:
This looks like a pretty straightforward kit to build. The challenger here, along with most DIY clocks is building a case for it. If you have any suggestions, let me know!