There are actually several retailers online and offline you can find these watches. You can find these retailers along with reviews on these watches before you go out and purchase one.
You can get a gps running watch at www.runnersworld.com or www.amazon.com. Both offer shipping to most areas at a decent price and have customer reviews, so you can find out which watch would be best for you.
A gps watch is definitely worth the buy because they are great for tracking your distance and everything when running. I wouldn't spend too much money on one though, i'd get one from amazon.
One can buy a running watch from Amazon or Runner's World. These watches can have features such as GPS and heart rate monitors which can be helpful for runners.
This website, http://www.tech4o.com/discover/index.html?gclid=CLLTzoWg76oCFUKo4AodaXG4Og has some of the best quality GPS running watches. There are also less expensive models avaialable on amazon.com
Running watches with GPS are available at many places online. Two Canadian places where they can be purchased online are mec.ca and runningroom.com. They can also be bought from the online Nike store and eBay.
One can purchase GPS running watches online from a variety of stores. The obvious ones are eBay and Amazon. Other great places to buy GPS running watches from are RadioShack and Finish Line.
I would appear to be a large number of online stores selling a wide range of gps watches. Alternatively your local running shop should stock a range of differing types from just heart rate monitors to combinned gps watches.
You can buy a cheap Garmin in Michigan at your local Best Buy. They have a wide selection.
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I would guess Best Buy's Insignia brand... makes a nice cheap toy gps though if you buy refurbs.
The Garmin approach s1 GPS watch is a more portable alternative to the traditional car based GPS system. The portability of the GPS watch is its biggest advantage. Unfortunately it does not have all of the capabilities of a car based GPS system.
Walmart and other major superstores sell GPS Systems. If looking to buy online, Amazon or Ebay are great options to buy a GPS system that is of good quality for a great price.