Injustice!!! MSI Charging me for replace my Twin Frozr III under warranty...

Question

They says it is because it is oxidized. I have my PC since 2009. I bought this video card as part of an upgrade in December, 2011. Only 20 months have passed. My PC is not oxidized in any part or component. Nothing have failed by oxidation or other fact, all working like a charm. My older (EGA NVIDIA 275 GTX) Video Card is still working in another PC in the same house with no oxidation or whatever.
Two weeks ago, my MSI Twin Frozr III stopped working and I sent it to the warranty (RMA: RRD13022836).
Now MSI are charging me a replacement fee of $55.00 because oxidation. The only part oxidized that I see is the faceplate where are the connectors at the back. My PC is two years older than the MSI Twin Frozr III and it is not oxidized. The oxidation on the video card is because MSI used cheap materials. Why do I have to pay for that? Do MSI test their products on other normal environments?
Here in my Country the air is normally damp but not at the grade that my electronics fail for that.
If here is anyone that can help me with this injustice please reply.
Here is a picture that they sent me of my card:
Here are some pictures of my PC with another video card, dusty maybe but not oxidized:

Answer 1

I install hardwood floors for a living here in Florida.  One of the things I look for before I install a floor is moisture.  I test the subfloor for it and look around the room for it.  I might suggest in this case that you closely inspect the area where this computer has been kept for high moisture content.  Moisture that is too high can cause mold growth which is bad and it's better to catch a problem early than deal with a big expensive repair to your house later on.
When I bought my first MSI graphics card it was because of the quality level.  The attention to detail when designing their cards and motherboards is very high.   I've used the other popular manufacturers for things and I have not felt the same about their attention to detail.  I have heard stories about people sending their items out for RMA only to get them sent right back with nothing fixed and no explanation why.  Well I agree $55.00 isn't the best news, at least they took the time to look your card over and make a determination that they felt was fair and then present their findings and your options to you.  This all instead of just sending the card straight back to you.  If it was me I would just pay the $55.00 for the nice clean working card. 
You may consider about once a month too every two months, taking your PC outside the house and blowing the dust out of it.  I personally use this http://www.metrovacworld.com/DataVac%20Electric%20Duster.  This is not a vacuum it is a blower and works well and keeps you from having to buy those cans of compressed air all the time.