Over the last few months since they put QCP into effect, EPC has increased $0.02-$0.04 overall.
Under the old system, if you had 10 clicks or 10,000 you got WBR + ACRU.
Under the new system, you are supposed to get WBR +ACRU smoothed out over your total click volume.
My QPC earnings were 50% of my WBR earnings. They are clawing back a lot of my commissions. I don't even bother to count ACRUs I don't get paid for.
I think we should stop looking at EPC and start looking at our WBR versus QPC earnings. If a site drives 10 clicks to amazon, or 100 clicks to ebay, the only way to compare them, is on commission not on EPC because the clicks are not equal, and never will be.
EPC is only useful for comparing the same paradigms, not pre-QPC, post-QPC certainly when you figure in all of the bot blocking they are doing now, your EPC would have to be higher, even if your total revenue was not.
Note, I wrote this with a migraine, so if it doesnt make sense, I apologize.