Though I do make a small profit on some of the things I sell, in other cases profits are elusive. A typical example is the Datanetics keyboard PCB. Here is a timeline.

Spring, 2010: I started this project.
December, 2010: I had the first batch of 10 PCBs made.
October, 2011: I sold out the first batch of 10 – the project had cost me several hundred dollars, even after selling all the extra PCBs.
October, 2012: new run of 20 PCBs made
August, 2013: I finally have broken even, income from PCB sales have covered all the expenses I have incurred on this project

For those of you that are interested, I still have some PCBs available.

For those of you that have purchased the PCBs and are using Apple II keycaps, I plan on having a batch of custom Datanetics keycaps made sometime in the next 6 months or year. Hopefully there is enough interest from PCB owners that I will not have to wait 3 years to recoup my expenses from a custom keycap set. Let me, mike@willegal.net, know if you are are interested in this.