Anyone that is up on the new tech toys knows that they can sure cost a lot of money.  Take the iPhone for example.  With the advancement of the iPhone every few years, comes a 'new' version.  Imagine how much money you could save if you could 'resell' your iPhone once you buy the newly released version.  You could almost justify shelling out the additional money.  If you plan to resell it (I've actually re-sold 2 of my regular iPods to upgrade), you need to make sure it's in 'mint' condition. 

There are a lot of iphone screen protectors out there and they come in many shapes and sizes.  Some are actually a leather case or a hard plastic covering, while some others are just a think clear plastic sheet you can place on the iPhone.  Personally I prefer the thin plastic covering since you can hardly even tell it's on!  Even if you have one of those big clunky cases, you still might want to consider one of these 'invisible' protectors.

I found a great one on www.zagg.com and it's called the ''invisibleSHIELD''.  It will fit your iPhone perfectly and it's made of some really tough plastic.  If you use your iPhone at the beach or the gym you really should invest in this great product.  You can get a 'set' or just a cover for the front of the back of the phone.  Check out all of their cool 'protection' products.