The answer to this question has way too many variables. Having been mobile for 4 years, I can say these things; fairly low start-up costs, convenience for customers, low expenses. On the negative side; niche market (limited demand), waste a lot of time driving around, scheduling, extreme weather, and low recognition. Having said that, I would like to have a shop, however, there are some issues with that as well. It would have to be the right location (prominent) that gets good drive by traffic. It would cost a lot more money because of the previous statement. Nice building with a nice interior and exterior. A shop would require a much higher investment in equipment so that it runs very efficiently. It would also require employees, and along with that comes workers compensation, and the headache of having to manage those employees. A shop, however, if done right has the potential to make much more money than a mobile operation. You can take advantage of economies of scale that I believe are not possible with a mobile operation. Bottom line is a shop is a higher risk, but also a potentially higher reward.