you have to do all of that.
that is what keeps the game going, researching it. If it was that easy to just choose any offer, it would die down.
Look to see how much the offer costs, are you going to profit good off it compared to how much you are spending in advertising that offer?
If you're new to the scene do a google search for Market Samurai, download the free software and read all the free ebooks that come along with it. It's everything you need to know to get started in researching products, markets, competition and such...
Their ebooks are a great source for a free education... The material there has been rehashed into so many $97 ebooks its sick.
I have no interest in Market Samurai other than that of a satisfied user.