This year I lost $2200 with my DM_eng business. Granted this year took much more expense setting up a home assembly line and buying equipment. The business has never really been profitable but was used to fund my R&D expenses. It was not a big deal when I was employed and earning a good yearly income but now I can not afford that kind of loss again.
So I have decided to do a 10% price increase on my products. I hope this increase will prevent any loss in the following years but I still will need to minimize my R&D expenses.