Factor vs Offest

[traquau]

Hi zener
I am confused about price factor, as I understand the rule is Price = Prefix + Base price * ( Factor - Offset ) , why we need Offset ?
Could someone explain a little bit how it work to me ?
Thanks

[kobra]

The math that this does is behind the scenes and not visible to the customer.

So to make things look correct on the frontend that the customer sees you can do some math behind their view.

Try it with this senario:

test item at $1.00 with an attribute to sell a case of 12 first at $1.00 each

Then at some discount for the case. And see what is displayed to your customer.

Now using factor and offset you can change what the customer sees

[traquau]

Hi
I set up Test product with price 100
Add attribute with price +10 , factor 1 , offset 0.2
So the total price in front end is 190 ( 100 +90 )

In case 2 , I change factor to 0.8, offset null ( 0) , the total price is the same 190 .
I don't understand why we need offset ? Could you give me some hint?

[kobra]

You did not try what I explained

attribute > no price > want to sell by the case of 12 > factor = 12 > no offset

View the product from the front end

Now set offset to 2 and view then offset to -1 and view