Average weight of a:
DVD weighs an average of 4 oz.
Xbox 360 video game or a PS3 Game (COMPLETE) weighs an average of 5 oz.
Same for a Wii Game
A complete CD weighs an average of 4 oz
A 2 Disc DVD set, weighs an average of 5 oz .
If either of these items has a Cardboard Sleeve, add 1 oz to the weight.
*Most of these items actually weigh less that 4.5 oz. but you have to round up if it exceeds an ounce, for shipping purposes.
I will do a post for books next. These weights are handy if you use sites like, swaptree.com cheapassgamer.com gametz.com or ebay.com just to name a few.