Cost vs GP, making a profit.

When looking at supplier cost price vs sell price, there is no calculation to indicate what GP you will or will not make from the sale of a product. There must be a calculation on the screen showing the GP margin percentage and GP in dollars for every product sold. It is too easy here to buy a product for $7 and sell it at $1 due to a simple typo as the product screen does not highlight the problem. At any point in Neto, if you can edit either the cost or sell price of a product, the screen must highlight the GP. Bought for $7ex sold for $10inc, GP $2.09 or 23%. This is how I know I am turning a profit. I would like to see Neto auto fill the sell price once I have entered a cost price, each department/category is set a GP standard and Neto populates using that rule. Once I enter $7ex, I need to make 40% so straight away Neto enters $13. Rules are needed here so that the correct rounding are followed, i.e. $13 is rounded to $12.99 etc. The same applies in the reverse, if you are discounting a product I need to know that I have not discounted past my cost price. There is no point giving a 50% discount on a $12.99 product bought for $7ex, straight away I am loosing money and Neto needs to tell me before I do. Knowing what you are buying a product for and then seeing what profit you will make from the sale of that product is an essential step in ensuring that your business will turn a profit.