Hi, I've designed and built a product (circuit board/sensor) Originally I planned on releasing it with my other products which would help create a demand for the sensor. However now I believe I could sell the this board by itself to start but I'm having trouble gauging interest. The closest board to mine that is for sale uses a laser based sensor while mine doesn't. Which allows me to sell mine for $15-20 instead of $30 . (No loss in performance) This board sold 800 in four years so about 200 per year. This is the only information I have to base a sales estimation on, is it logical to expect to sell 200 per year? Another note, I'm a college student so selling only 200 a year is fine by me I had a link to the product but since I'm new it won't let me post them just yet.