There are many retailers that offer marine GPS products, and it is very easy to locate them on Amazon, Ebay and BestBuy. However I would recommend purchasing one from a specialized retailer such as WestMarine as they can offer valuable advice according to what marine GPS would be the best choice for your husband's little boat.
The Magellan Marine GPS is fairly priced at $105.36 (new) and $104.16 (used) through Amazon.com http://www.amazon.com/Magellan-Meridian-Marine-Waterproof-Hiking/dp/B00005OLY9
Yes, it is possible to find accessories like a windshield mount for your GPS, without having to buy a whole new GPS. Look for a windshield mount that is compatible with your particular brand and model of GPS.
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.
Yes there are GPS mounting brackets for a hand-held marine GPS. They can be found from Garmin and New Arkon.http://www.amazon.com/gp/browse.html?ie=UTF8&marketplaceID=ATVPDKIKX0DER&me=A2JUPN4BTA3CZV
If you are looking to purchase a GPS but lack the funds to buy a brand new, top of the line GPS, you may want to consider buying a discount Garmin GPS device. You can find a discount Garmin GPS navigation system online. Many stores offer great deals on GPS navigation systems. A great way to find a discount Garmin GPS device is to look for a refurbished GPS device from a store like Best Buy.
The price of a streetpilot gps can range from around $105 to over $700 depending on your wants and needs. There are many stores that care these and they will be able assist with the best option for you.
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 TomTom GPS brand comes out with updates every couple months so you can keep your GPS current with all the new routes.
Best Buy has a wide variety of GPS systems, and offer a fair and unbiased shopping experience. If you have a smartphone, read your manual. You may have a GPS built in!
As you decide between a generic GPS system and a name brand one, you really want to look at whether or not you get automatic updates with the machine that you choose. Do not buy a GPS that does not provide you with these. New roads are being opened up all of the time, and others are being closed off. If your GPS unit is not up to date, you will frequently be led astray.
NZ Maps can be purchased online for most GPS devices.
GPS navigation devices are springing up everywhere. Consumer review sites like Amazon are a great place to learn about and possibly purchase a new GPS.