Take one new line, the 'healthy bowl' business, usually involving exotic fruits and a gluten-free type menu. Estimates for startup are around $200k to $500k or higher depending on location. Even if you're at the bottom end of that, $200k of debt (assuming you have little cash to begin with) sets you back at least $800 a month. Not to mention, you've got your utilities (water, electricity, insurance) to cover. How many bowls does one have to sell to start to make a profit from an operation like this? Take the acai bowl business, they sell at an average price of ~ $9-10. Margin on that is probably what, 30-40%? Even if generous at 50%, then at $5 per bowl you've got to sell 200-300 bowls a month just to break even. Does the math work?