2006 Volkswagen Jetta TDI Question: Front CrankShaft seal replacment

I just had mine fail. now I am looking at finding a good mechanic or helping my brother who is the one who is mechanically inclined in the family do it. I have none of the specialty tools yet but I could acquire them. How much time/money would I save by doing this myself or having a shop do it.
Also, it's already halfway pulled apart and I am looking at the outside of the crankshaft. And my brother has done nothing on German cars before but he is up for the task. Thanks in advance.