Adsense earning varies a lot

[honkam]

Hello,

well, just found that my adsense earning varies a lot.
sometime, I earn $0.5 per a visitor click, sometime it just $0.05 per a visitor click. can you tell me why?

A stupid idea, I found the earning per click dropped when I used Adsense Channels , are these two things related?

thank you.

[BeeDeeDubbleU]

Honkam this is not unusual. Advertisers pay different amounts in Adwords so you get different amounts for clicks. On one of my sites I have clicks that pay from 1c to about $10.

[peewhy]

Its normal to see two different earnings in Aggregate and Channels, the latter being the lower because it takes into account sites as a whole. There may be instances where you haven't created a channel for one particular page, so that will show in aggregate but not in channel.

[sailorjwd]

I often see a 100 fold change in epc.