Explaining how I choose "how much to bid" for Pay Per click ads (Facebook, Reddit, etc)

Check out this table....

http://i.imgur.com/ZIRN66R.png

Unique Visits to /signup: I collect this info from google analytics.

New orders: I collect this info from sendowl, my cc processor

AOV: I collect this info from sendowl. This metric means Average Order Value, or, how much did someone spend any time a purchase occurred.

Conv Rate: Divide the number of orders by the number of visits to determine what % of visitors become customers

Value/Visit: Multiply the Average order value by the Conversion rate

CPC Budget: Figure out the value of a visit (a "click") and then multiply by the number of months the user is going to subscribed. I calculated this for a variety of Lifetime Values.

Now, when I go onto reddit, facebook, adwords, I know how to set my CPC budget.

PS. If you're wondering why AOV went up from February to March, it's because we increased the Code For Cash subscription price.