Hello LOLDWU6,
Welcome to the Apple Support Communities. I was reading about your issues, there are a few things that can be done in the following article for troubleshooting hardware.
iPod nano (6th generation): Hardware troubleshooting
http://support.apple.com/kb/TS3474
If you are still having the issue, the answer to question about price is on the service answer Center for iPod.
Service Answer Center – iPod
http://support.apple.com/kb/index?page=servicefaq&geo=United_States&product=ipod
You can also look to see if there was a warranty associated with the iPod if it was just replaced.
Check Your Service and Support Coverage
https://selfsolve.apple.com/agreementWarrantyDynamic.do
If you choose the route for Apple to service you iPod Nano, below is the link to choose the store closest to you and then you will be able to pick the time the is the most convenient for you.
Genius Bar Reservation
http://concierge.apple.com/reservation/us/en/techsupport/
Have a great day,
-Norm G.