There probably isn't many countries that still have WW2 era kit and earlier in storage (apart from Russia) and therefore there isn't the stuff being released into the collectors market that there once was. I remember a UK
dealer once telling me that he purchased a huge number of 1907 bayonets after they were turned out of storage from a European country. It may have been Greece if I remember correctly. He did sell them at a very reasonable price but eventually when they were all sold the prices of 1907 bayonets started to go up in the UK.