Why p2.5mm led display is with more than 2870 kinds of price?

If you know the secret of led display price, you will know why p2.5mm led display is with more than 2870 kinds of price.

What is the secret of led display price?

The secret is as below:

LED display price = LEDs+ pcb +drive IC + power supplier + more

Mentioned above is only part of led display price.

If you know the secret of led display, you will save 10% to 30% cost a year with the same material.

What I means is with the same material, you also can save 10% to 30% cost a year.

Would you like to know the secret of led display price?

Would you like to know how to save 10% to 30% cost a year with the same material?

Would you like to know the why p2.5mm LED display is with more than 2870 kinds of price?