There really aren't any good GPS devices for under 50 dollars, but http://dealspl.us/GPS_deals/p_gps-navigation-for-dummies-3-5-fd-220-portable-gps1 seems to be a good choice for about 40 dollars.
A good portable navigation system can be found at many online retailers. Newegg.com, Bestbuy.com, Amazon.com, and Ebay.com offer many options based on your needs.
One of the highest quality GPS systems is the Garmin. It is relatively affordable and can be bought at stores like Best Buy. It has many features and can be updated as needed.
All of the GPS companies have many different products that have a large range in prices. The most affordable GPS that I have encountered has been at walmart.com for $49.99. There may be even more affordable GPS devices on ebay.
If you are really wondering what is the difference between self and navigator GPS because you need to buy a new GPS that is not expensive, then you should buy the auto GPS navigator.
The absolute best GPS navigator that one can buy for their car would have to be the Garmin GPS. It's affordable, easy to use, isn't bulky and ugly, and you get what you pay for.
It depends on what you are willing to pay and what phone model you would like to purchase. Sprint offers an affordable price for their phones with GPS capabilities. You can either buy brand new or buy used.
You can buy a new GPS at amazon.com. They have a great selection of different brands and they offer great, affordable prices. Another great place is Wal-Mart.
As long as there are no clear malfunctions, it should be safe to buy an older GPS. However, there are affordable models that are available new, like a TomTom XL 350 for around $50. This might save you the trouble of uploading new map information or worrying about battery problems.
Garmin is the leading company in quality, affordable GPS systems. You can purchase a wallet friendly GPS system from their online website or find Garmin products at your local Best Buy, or Wal-Mart shopping centers.
A Garmin GPS data cable should be relatively easy to find locally. Stores like Radio Shack, Best Buy or Target should have a GPS data cable on the shelf.
There are a number of places one can find a GPS for an affordable price. It really just depends on what features you want. I would recommend Best Buy, Amazon, and EBay.
Most GPS child trackers can be bought for around $150 to $200. There are also much more affordable child GPS units available for as low as $50. For instance, you can get the Little Buddy Child GPS Tracker at http://www.amazon.com/Little-Buddy-Child-GPS-Tracker/dp/B004H1K9H2 for about $50 with shipping.