The new bundles are very strange, for example the 199 bundles offer the same minutes, SMS and data they only changed the device price and monthly fee. For example 8GB Postpaid 99 cost after a year is 3443SR and Postpaid 199 is 3228SR, different prices for the same bundle. The iPhone 299 bundle have a data limit of 500MB a month yet the more expensive iPhone 399 bundle have a data limit of 200MB.
Here’s a table of the iPhone 3G price after a full year:
Update: While it’s not mentioned on Mobily’s site, all of these bundles are for VIP Mobily customers only.