incarceration

so apparently i find my side mirror has a little chip in it and a crack when looking in my mirror..

is there a possibility my dealership would be able to help me out with this on repairs? is it better to just order a replacement part from say... this site here ? if i were to get this, how would i go about replacement? is it difficult?

is there a better way of getting it repaired? cheaper way? of course, i don't really want to get something that looks cheesy i'd like to get an original replacement. any ideas appreciated, thanks