I've pasted in the current orders for laser amps below. As you can see, the prices at least for A103's are still being pushed higher. The order system can be easily used to keep on bumping up the price of an item.
I agree that people will pay what they believe an item is worth (and in this case, I'm guessing A103's have a way to go). However, by having an order system for non-stackables, the game makes it easier for people to push up the price quickly.
Click to enlarge