Using {tokens} in your title

So I am helping out with a eCommerce site and I have a idea but need to know if you have done it before or if it will work the way I want it to work.

For the title of the webpage I want to do this..

Cheap Product | {city token}'s Best Product | http://www.domain.com

So depending on what city they are in (by IP address) the {token} will display their city.

Now my question is how will google crawl this? If I am trying to do local seo Dayton, OH will this work? AND work for every other city?

Basically this is like doing a nationwide local seo campaign, right?

anyone?

If you make each area have a unique URL then google will crawl it.

Make dynamic URLs - http://www.yoursite.com/product/{token}