Not so expensive if you count the following:
1. PowerBank 5200mAh cost around RM50 to RM100
(I am sure most people has at less a PowerBank)
2. External USB 2.5" HDD Storage 500GB around RM180
(I am sure most people also has at less a unit)
3. Wireless-N Repeater with DLNA cost around RM80 to RM200
Total Standalone of the above 3 items cost you around RM310 to RM480
Now, all those 3 items combined into 1 unit Multi-Functions with only the size of a external HDD which only cost you around RM450 for a 500GB unit
Not counted it save you the weight of those 3 items to carry around and also if you're iphone/ipad users it save you the time to convert video format or copy & erase your video/picture/music files when you reach your low storage warning.
