Xbox 360 Hard Drive
One unique feature that the Xbox 360 has is a built in hard drive that allows you to store all your favorite media on the device instead of keeping it on discs and external devices.
The Xbox 360 is available in a variety of capacities and changes obviously with the amount of money you lay up front for the system. The more you pay the more hard drive space you are going to get.
The average hard drive space for the Xbox 360 is about 30 gigabytes and this is quite a bit of room as it is enough to store thousands of songs and hours of videos or your favorite movies.
Now if you do not know too much about the sizes of hard drives and such and are going to buy the premium edition because it has a larger hard drive then I suggest that you seriously consider how much media you will be storing on your Xbox. If you are not storing much then you are just wasting your money on hard disk space that will go unused.
You can purchase 20GB hard drives on Ebay for under $50 for the Xbox 360. Then there is the Xbox 360 Elite 120GB hard drive which is a massive amount of storage space. You can purchase the hard drive only for around $130 on Ebay as of time of writing.