When purchasing a GPS unit most people know that a GPS sale is one of the best ways to save money. One thing that many people do not know is that there are some important things that you can do that will help you save even more money.Obviously the first thing that needs to be done is to find the sales for GPS systems. You can find these sales online or offline at your local store. Once you do find the sales you need to compare all the ones found for the following to help you save as much money as possible.1. Shipping - Because the GPS unit could be on sale, but the cost for shipping it could be expensive, always pay attention to the shipping costs. You want to find the sale that offers the best deal on shipping the GPS to you if you really want to save money.2. Features - You have to consider the features needed when purchasing any GPS. One essential thing to remember is that the more features you have on your unit the more it is going to cost you even with a sale for that particular unit.Only get the features that are absolutely needed and no extras so you can save as much money as possible.3. Compare - This is something that you hear about all the time because it is very vital to finding the right GPS for you at the cheapest price possible. Even when there is a sale you have to compare because you never know when you will find the GPS you need for a much better price.4. Online or offline - Always look for GPS using both of these methods but usually getting your GPS online makes more sense because you can save more money. For many different reasons online stores are able to offer a lower price.Because this is the best way to make sure you find the best price possible, you want to take time to compare offline prices for GPS systems with online prices when searching for sales.Now that you know how to save the most money on a GPS sale; all that remains is to start your search for the right GPS for the best price.Because this could end up costing you more money than you need to pay do not rush your decision on what unit to get. You will definitely be able to find a good sale price if you take your time.