If anyone is offering that, I'd stay away from them.

That's like me coming to you and offering you car insurance for $10, instead of $1000. It just doesn't make sense and is an unrealistic price. Chances are, sooner or later these guys will shut down or sell off their business.

Do some research and you'll notice the average type of prices yourself.

BTW, what's the link to this "supposdly" low offering biz.