"So you see a certain person is listed in several census records....now do you have to pay the subscription for the census records to view them?"

Yes, of course. Duh.

"If OWT also allows you to view the images of documents related only to particular individuals then the price would be worth it."

And if I performed several hundred searches on "particular" individuals every day, I won't need the rest of Ancestry's services at all. NOT. Ain't gonna happen.