What Niche is the best earner in Adsense? I have heard that if your site have content which can attract ads that directly related to some product sales then you are destined to earn more from adsense. For example sites for Laptop reviews or cameras reviews or price or feature comparison sites for high priced products.. How correct is this assumption?
the click is depend on the competition of the adwords advertisers. if you choose the niche/keywords that advertisers willing to pay high, you wil get a highpriced click. simple as that.
finance, insurance, credit cards, technology, softwares, marketing, webhosting, domains are few niches which will pay u higher amount than other ordinary niches
As you said, hi-tech gadgets will be high paying niche and so is insurance, stocks, real estate, domain hosting etc...
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It also depends on the state of the economy. In light with the global financial crisis, you may experience drop of cost on ads related with investment, morgage, banking, etc. You still have to test the waters and be keen on the law of supply and demand.
For travel related it depands on holiday season, but niche that steadily increased is finance, education and health issue.