This advertising model takes into account:

1. Available advertising budget

2. Cost of ad space

3. Ad space availability

4. Cost per unit of ad space

5. Expected reach of each ad

6. Expected Conversion Rate of each ad

The model uses this information to maximise the number of leads while minimising the associated costs, and doing so within the given budget.

Given the varying available ad space, costs per unit, reach and conversion rate; it is difficult to identify the relative value of each ad agency. This model identifies the highest value ad agencies and prescribes which ads to purchase within the given budget.