1$ TextLinks are they worth it?

Well, 1$ textlinks have always been a quick way for people to get PR up other than doing link exchange. But are 1$ textlinks worth buying? Well look at it this way.. If your site is about cars and you buy a link on a site about cars you will benifit more PR from it, but if you buy a link on a site thats all about 1$ textlinks how much do you acctually benifit from it?


So i ask you: Is it worth it? and do you use 1$ textlinks?