Champion/Skin sales "predictor"

Someone I talk to on Skype linked me an interesting video about predicting the next set of champions/skins that will be on sale (the champions predictor is a lot better/easier to understand, has around 98% success rate).

Here is the google docs link (https://docs.google.com/spreadsheet...0RlTW44MU1RSEV2YUE&f=true&noheader=true&gid=0 ) Basically, the champions for each tier (excluding 450IP champs) are in tables showing when they were last on sale, in each group there are a few green champions (ones that haven't had a sale in a long time, thus more likely to be picked) orange champions (could be picked for a sale, unlikely though) then there are red champions which have recently been in sale.

Thought I would share it with you incase you were interested in seeing which champs are on sale in the near future, this could help you save quite a few RP's!