She can't suck well

Actually the Kirby (in picture) is much more powerful than other vacuums. Other vacuums are all basically worthless in comparison. If a Kirby salesman comes to your door and you have the time to watch his presentation, watch it. It's amazing how pathetic other vacuums are in comparision. (Reinforce how you can't afford it though. They're pushy but not too bad)

This happens because of perfect competition, all the products are the same and no firm has power. More economics knowledge when I learn more economics