Just because old model cost x does not mean new model will cost x. Clearly you're comparing apples to oranges. Now the real question is what is the return on investment? How much did you make?
My ROI so far is time savings and exponential increase in my personal production capacity. After I release Guild, I'm going to either productize it or focus on a few old startup ideas that were too time/capital intensive for me to bring to market without raising money, but now will only take me a few months to bring to market working part time