I think the new sites, Laptop Gamers and Digital Grabber, are a victim of Google Smart Pricing. I don’t know how else to explain the huge eCPM difference between the new sites and The TechZone.
The Tech Zone’s eCPM is up to five times higher than the new sites. A way around smart pricing is to place the site in a sub domain of the site that is not a victim of smart pricing but since these are entirely separate sites, that is not possible. The only thing I can really do is try to optimize the ads for better click rate. That will have an effect on smart pricing since click rate is one of the factors it looks for.
All I know I have to fix this problem because money is being lost. Digital Grabber is at over 130,000 page views so far this month and made $160 from Google AdSense. It would make up to five times that much if it was not under smart pricing and can match the eCPM of The TechZone.