The visitors who visited the webpage were offered to get one free promotional subscription for one month and 70% took advantage of that. The next month, only 40% of them bought the subscripion fee for at least one month.

Marketing campaign	Cost	Visits on webpage
Internet ad	$80.000	47 visits
Targeted mail	$250.000	104 visits
TV coverage	$0	76 visits
Cost for free promotional subscription for one customer	$5,000	-

1) What is the cost to get each customer who pays at least for one subscription month, based on the different marketing campaign strategies?

2) Which marketing strategy is most promising?