Presonus PreSonus Audio Electronics, Inc. Defective product + outrageous charge to repair = rip off Baton Rouge, Louisiana

I purchased a Presonus firestudio Project recording interface in 2009. I paid $400 for this piece of equipment. I assumed that since it would be a studio piece of equipment that I would never have to worry about it wearing out. Its job was to sit on a rack and direct incoming signal to my computer. There would be no travel or out of studio use. I did not use this device daily and when I didnt use it I turned it off.
Over the time I used it I recorded a few hundred songs. I recorded one and a half albums. And then in 2012 it died. Right in the middle of an album. I was forced to use a two channel interface instead of my Presonus which is an 8 channel interface.
I contacted the company shortly after this and after emailing them for a month I was sent a shipping number and a form to fill out. The form had a place for my credit card number and a list of charges for various pieces. The charge was $95. for repair.
This I didnt understand, I paid $400 for this unit, and never mistreated it, and the company wants another $95 to fix their defective equipment. This is wrong, if they want to charge a shipping charge - fine. But trying to take more of my money for a defective piece of crap, well thats wrong.