This is, of course, pretty standard affiliate marketing method in the MMO niche promoting products on WarriorPlus etc.
The three videos for
1. Free
2. Traffic Swaps
3. Bought traffic
will be interesting to those who are new to this.
As always, the key to all this is to drive traffic to your squeeze page, build a list and then use the 40 emails (supplied from the OTO) to sell to your subscribers.
The emails are supplied with an (optional) Aweber sharing code for easy install if you have an Aweber account.
I do recommend that you edit the emails to adapt them to your own character. And then produce variations with more products to promote later.
In a nutshell, this is a perfectly workable system providing that you invest in building your list in the first place and build a good relationship with your subscribers.
for sharing! Max reps added!