Plus if you live in the US and are trusting your pricey, covetable electronics to your checked bags and the underpaid TSA inspectors, you are much more trusting than I am.
For a similar product with an actual presentation, see http://www.indiegogo.com/blutracker/
Also, am I the only person who gets seriously bothered by profession-looking websites or applications that list the dollar sign after a price?
It's common practice in some other countries to place the currency sign after the amount.
(http://ux.stackexchange.com/questions/22574/where-to-place-c...)
What if you don't. You could get lucky if you leave your iPad in the bag. But the point is when you don't.
Maybe this leads back to my first statement that the landing page needs much more info to convince the user this is worth the money.
BTW, genuine question - which GPS tracker are you thinking of that is less than $40 and will transmit its location to you remotely? I'd be extremely interested in one of those, but I've never seen one for that kind of price.
If by "sites online" you mean "send a text" sure. But that kind of data & gps usage will kill a normal dumbphone battery within a few hours.
These devices use a battery 1/4 to 1/3rd the life of a smartphone's and they use GPS chips or SOCs with integrated GPS that suck power much more quickly that the high-end SOCs you find in iPhones and decent Android devices. They do not have long battery life. Try it. I have.
There is quite a few tutorials online that explain how to to do it for your car
And these tutorials almost always hook the phone up to 12V power. Relying on a dumbphone battery just isn't worth it.
Supported devices: http://mologogo.wikispaces.com/Phone+List
Altertnate (commercial) service supported devices: http://support.accutracking.com/kb/article/00003
More info, eHow style: http://www.maps-gps-info.com/free-gps-cell-phone-tracking.ht...
Slightly off topic: What if you already own both an iPad (assuming it's a 3g model and not just wifi) and an iPhone, couldn't you just leave your iPad in the bag then use the "Find Your iPhone" app to locate the bag for free?
EDIT: I guess my overall point is why would anyone pay $39.99 for a simple tracking device when you can do this free (with an iPad/iPhone) or buy a GPS tracker yourself, for cheaper than ~$40? Maybe this leads back to my first statement that the landing page needs much more info to convince the user this is worth the money.