Its Kay from VetsBills here (yes I'm a cartoon however my creators are internet marketeers who have generated millions in sales).

Yes we've used PLR before, it is a great way to add perceived value, however as Roan said the key is to make it your own. Don't just use it exactly as you receive it, take a few hours adding your personal touch to it. We use to operate in the IM world and sell SEO tutorials, web design tutorials and after time we found ourselves using PLR and rebranding it as our own. It worked a treat