I accidently posted this reply long before it was finished.
Third Reich relics will always have a market. However, that market will be much stronger in Europe where the war was fought than it is here. Part of the reason is that many of the people in the US who collect Third Reich relics are connected to someone who was in the war-father, uncles, grandfather etc.I am 57 and all my uncles were in the war, as well as my father and his friends. Many of my friends in school had stuff in their attic that their dads brought back. As time progresses, people will lose that connection to the war. How many kids in high school right now even know the first thing about the Third Reich? Not many.
Secondly, we have lost our middle class. The people who worked in the manufacturing sector who had a healthy paycheck and benefits, and who could afford boats, guns and other toys. That whole sector of the economy has been turned into food service and retail clerks who get minimum wage and 40 hours a week if they are lucky and 20 hours a week if they are not lucky, and non of them are getting insurance or other benefits.
The top shelf stuff will always have suiters, but the average stuff will not continue to bring the prices that people still want to get. When you see hundreds of SA daggers at SOS with no one standing in line to buy them, priced at $700 and up, you have to wonder if the stuff is really for sale or if the owners are merely trying to show off.
I still like the stuff and will continue to buy if the quality is there and the price is reasonable.However, I do NOT consider it to be an investment, especiallly at my age, ( I am not 15 years old like I was when I started) and there is nothing that I cant walk away from. Every one of my friends who is also a collector is of the same opinion. I am NOT saying the sky is falling, I am just saying thatin my opinion, prices are going to moderate or subside in the forseable future, due to the collapse of the middle class and the gradual loss of interest in World War Two.

Just my two cents, fwiw. Joe S