Offers policy:

1- measure sales item in data and find history of rank sales 

2- find highest sales for item and make offer for it but make sure you get less price for purchase for cost

3- make sure to avoid offers in our session make it in our months which have less sales 

4-study all offers to know whats your benefit before start offers

5- let design market make design for offers as you finish your study to know cost for adverts also