1. How much CPA (cost-per-acquisition) would you pay for this traffic?
2. What payback period would you expect for that CPA?

GRAPH
-------------------------------------+-------+-----------+------------+------------+------------+
Month                                |   4   |     5     |     6     
|      7     |     8      |
# Real players acquired per month    |   1   |    40     |    79     
|      151   |    196     |
Net Revenue ($)                      | $2.40 | $2,506.06 | -$8,468.19
| $12,532.08 | $28,561.58 |
-------------------------------------+-------+-----------+------------+------------+------------+

NOTES:
1. Real playes acquired per month is the number of new players
acquired during that month and not cumullative.
2. Net revenue is the net revenue earned that month from all the
players who have been acquired through this source of traffic.
3. CPA: Cost per Acquisition
4. Payback period : the number of days it would take to recover the
CPA paid for an average player based on the revenue data available
above.