Actually a laser or waterjet has to pierce all those arrays of holes and slots, which take time, which is what you charge for. Plus deburring and powdercoating. At only 1mm thick the pierces will go fast, but prices will not be cheap until you're punching out low thousands on a CNC turret punch. Source: I own and operate a waterjet and frequently design similar parts.
Laser/water jet cutting metal and powder coating it is so common that you can submit such an order online and have it in a day.
What I am trying to say is that the cost because of small quantities does not apply here. This is just the cost of the brand.