For me it would be important to see how well the product functions for the average consumer. I would also want to ensure that it was a durable product and not something poorly made that would break within a few uses. It's durability would help consumers build faith in what you're selling, since people want a product that is going to last a long time without any major issues. Finally, I would consider how easy it is for the average person to use. If the product is too complicated or confusing it might not appeal to the masses. Something basic or easily understandable is important to how well people might perceive it as working.