If a start-up wishes to make big bucks in biohacking it has to deliver a product that is in wide demand by the general public.<p>The reagents on sale mentioned (Taq, antibiotic resistance genes and DNA ladders) are to biotech what solder and resistors are to electronics, i.e. very low value products of no use to the general public.<p>The real hurdle for true "biohacking" is the cost of laboratory facilities and equipment, which can easily run into a million dollars as soon as high speed centrifuges, -70 C freezers, sterile incubators and hoods, equipment for analysis, certified waste disposal facilities, etc, etc, are taken into account.<p>Compare this to making an app, which costs mostly the developers time and some hardware she already has lying around.