That is too bad about the Propins. It seems new collectors/traders and the very seasoned ones looking for a cheap trade have many of those. I even have some in my personal collection. Most every pin collector does as long as it is a theme you collect.
But those pins are what they are, cheap, and you get what you pay for.
The good side is they are tradeable in the WDW parks (unless things change).
The plus side to Propins is to my understanding those have not been manufactured for years now. Those pins were made in Germany, and the company did not renew their Disney contract probably 3 or more years ago. So what is out there. is it. At one time a set of 9 cost approx $19 U.S. dollars.
The really cheap ones are the Sedesma S.A. from Spain. They are generally smaller than a usual pin. (Even more so than Propins.) And appear to be painted and made of a thin, cheap black metal.
Even those are tradeable at this time. There is always rumors they will not be. And occasionally I have read of CMs refusing them in trades.
The lanyard pins are cast lanyard pins, as they can only be originally received from a CM in a trade. Of course there is always the secondary market and trading.
I just did not want those confused with a CM pin, which are different. Only CMs can purchase those, or they are awarded to a CM, etc. An example is the Minnie hat box pin I sent Matt. That is a CM pin.