how can I add one more price filed in product modify page ?

[benxp]

I know how to edit a product in product modify page but what i want to do is , in the product modify page, I want to add one more price field under Products " Price (Net) and Products Price (Gross):". It doesn't need show on website. The purpose is to record reference cost. I believe i need add one more row in products table to record it. It should be not very hard, but I don't know what's the exactly i can do . Anybody can give me some idea? really appriciate.

[Design75]

There is the profit margin mod, which may do a bit mor then you want, but it will give you enough clous to accomplish what you want.
Products Profit/Margin Calculator + Report
It will work with Zen Cart 1.5x, although it says 1.3.9

I know how to edit a product in product modify page but what i want to do is , in the product modify page, I want to add one more price field under Products " Price (Net) and Products Price (Gross):". It doesn't need show on website. The purpose is to record reference cost. I believe i need add one more row in products table to record it. It should be not very hard, but I don't know what's the exactly i can do . Anybody can give me some idea? really appriciate.

[benxp]

Hi thanks for your reply. But I don't want to go that far. I only need to record a reference price . It is not for margin purpose. We have our own accounts system.