The latest generation of Nuclear power plants are full cycle, produce close to nothing amount of waste

Plants being built these days are thermal burner reactors. They are no more "full cycle" than any other nuclear power reactors that have been built. And (like earlier reactors) reprocessing their spent fuel has no economic case.

And you can buy them and use them right now, as i can go and shop some solar panels, inverters, batteries, some cables put them about anywhere and just have free electricity after the initial expense?

Sources?