Ipod touch 4g dock and lcd repair/replacement costs

I have recently broke my ipod's lcd screen in a unneccesary attempt to repair the dock connector. I am concerned that it may have voided my warranty, and I haven't taken it apart fully. I have found out the answer to why my ipod stopped syncing about 2 months ago and has recently been unable to charge because I attempted to get the metal prongs back in place, which may have also voided my warranty. I bought my ipod touch in April 2012 and it broke in December to the point where it is unusable. My budget is pretty flat and i'm wondering how much the repair cost would be and if I should consider buying a new ipod touch or getting the one I have now repaired. I cannot find any place where I can get it repaired at a discount price, and I'm also wondering if I can get my ipod repaired at no charge since it is still less than a year old.