It also depends if you want popups on your site because 3USD is rate when you will have to show also popups... Classic pay per impression would just show banner and there is rate much lower. There is few PPI programs listed at www.pay-per-impression.com
I think there is no program paying 100% of traffic but if you are asking for payment proof than yes programs listed at the top of www.pay-per-impression.com pay on time. They dont pay 100% of traffic because not all countries are counted and also repetitive visits dont count.
These are the best CPM Networks I have seen and used some far. Also, Adsense does pay PPI also, but you will only get a good CPM rate if the advertisers selecting your website want to pay a high amount for your ad space and you will also need a good amount of advertisers competing against each other. Good luck.
You can give TextAdMarket a try (see sig). It is CPD "cost per day", which is similar to CPM, but could end up benefiting either the publisher or the advertiser more than expected.
why you don't try money4banner that will give you money monthly, you can check for details at my signature
To be honest, I never really looked at how much they pay per click. I was just happy that I was getting paid per 1,000 impressions. AdsDaq, at least, rewards me for increasing my website traffic each money. I can't say the same about Google.
Adsdaq is quite good compared to many networks, however TribalFusion beats all network hands down, including Google overall. Its damn difficult to get in though... but thats not the point here.