How to set a fix Price in JDE????

1. WE set a fix price for any Item

2. For item A if customer order for 1,2 , ...1000 any number price should be 111 only

3. order qty will enter and then Unit price populated .

4. But as i mention price should be fix regardless of qty.

5. Now the extended price is = UnitPrice * Qty

6. Suppose customer order for 3 Qty ,Extended price = 3*111=333   , but extended price should be 111 only.?????????