S4 USB port repair..

How much should this cost? I simply have a USB port that is loose from housing and causing connection issues.

I opened a ticket with NI.. they told me it will be a cheap and easy repair as long as I have the S4 serial registered.

Well... I bought it second hand, did not buy the software, don't know if I can track down the original owner.

So they gave me a price of $137 for repair + shipping both ways.

Seems a lot for a simple repair. What kind of BS is this that I have to pay more because I bought the unit second hand? I own Scratch software, S4, Maschine, Komplete Bundle, various other add on instruments + samples..... I am a big supporter of NI... but now very mad.

I posted this on NI forum as well