Factory ink tank printers offered cheap ink bottles. Does that mean that "ink is more expensive than human blood" is not relevant anymore?

Looking at your question history, you appear to be one of those shitty SEO bots and don't actually care about answers. But no. "Cheap" is an undefined quantity, and when you consider that many people will gladly give away their blood, and even blood banks that pay will generally only offer $20 to $50 per pint of plasma, the statement is still absolutely true.