They got to profitability on angel money. They were already profitable when they raised money from VCs. I don't know exactly how much angel money it took. Probably a couple hundred thousand. Costs have decreased so much since then that it's reasonable to think one could do the equivalent for $20k today, if one had to. But whether it would take $20k or $100k, the point is that the amount needed would be way below the typical series A deal size of $1-3 million. An order of magnitude less. Which means this is a company where VC-scale investment isn't required to win.