I guess I understand why you asked the question. What makes this plastic and rubber case any different than the no-name super cheap cases on ebay?
Well, I had the COMMUTER SERIES case on a Nokia 5230 and the phone still looks like new. The case fits like a glove and the silicone rubber feels good to the hands plus they come with a screen protector. The plastic gives the phone a little bit of smoothness in the right places, It drops nicely into the pockets. I dropped the phone a few times and the plastic did however crack. So, I replaced it with the IMPACT SERIES case and this one fits just as good and seems to be even a tad thicker. I am sure the phone could take a bounce and still survive unharmed.
IMO, the Otterbox cases fit, feel, and protest better than the cheap generic cases sold on ebay and at the mall kiosk. While I did not want to pay retail price I was able to find much better pricing on Google shopping. No way would I carry my $400+ smartphone around everyday without some type of case like this...it is only a matter of time before the phone will be dropped on the ground!