[ericsilly]

The difference between an agency/consultancy (selling services) and a product company is enormous. There are other advocates here for product, but since the $100k you mentioned is probably for a services engagement (you don't have a product yet), I'll share a warning about that model for a startup. When your business sells services, you essentially become a broker between people who need a type of work (your customers), and people who can do a type of work (your employees and sub-contractors). The health of the business, then, is tightly dependent on the relationship between the demand from your customers, and the availability and cost of the people with the right skills to execute the work. Assuming you're already in a good place to gauge the customer demand, my warning is about staffing to execute the work. It's easy to imagine that legions of the experts you've worked with previously will be inspired to join you, but you'd be surprised how untrue that can be (or possible but more expensive, due to the risks of a smaller company). Yes, it's possible to create a great, sustainable services business, but it's important to be aware of the challenges you can face with staffing, retention, keeping customers happy, and doing it all within a commercially viable margin.