http://www.allaboutsymbian.com/revie..._Protect_2.php

Here is the same track and protect for symbian. it's available on android now aswell.
Pricing is ok as you only need to have credits when you've lost your phone and want to find it. and 30cent is nothing to do an action when you may only do a few to find it. I would like to see it in action and how well it works so spending €5 to make sure i can track my phone if it's stolen is well worth the price. if the system is good i'd pay €50 for it. personal data and expensive hardware are worth a solid application in this field.