How Rare/Valuable Is This WW2 German Coin

It is a coin. Just not a currency coin, these were issued between 1934 and 1938 as far as I could search

"Coin" has a technical meaning: an item issued by a government, and intended for use as general circulating money and/or assigned a legal tender face value. This item does not fit into the classification as a "coin"; it was issued by the NSDAP party (not the German or Austrian government) at a time when Austria was not yet fully under Nazi German rule, and was not intended for use as money.

Adolf Hitler famously refused to put his portrait on coins. Apparently he saw that as the right of a king, and believed he would not earn that right until he succeeded in completing what the old Kaiser had failed to do (win the war and bring peace and prosperity to Germany). This was an attitude passed down the chain to the leaders of the Fascist puppet states under German occupation; when Vichy France put Petain's portrait on their coinage, Hitler became outraged and ordered those coins withdrawn and destroyed.

Nor would this item qualify as a "token", as a "token" is a privately-issued coin coin-like item, intended as a substitute or symbol for money or other items of value and, as noted earlier, this item was not intended for use as money. "Steiermark" is not a unit of currency in Germany or Austria; it is the name of an Austrian province (usually called "Styria" in English). Rather, this item would be classifiable as a "medal", given as a kind of a receipt for a political donation, of 1 Austrian schilling.The Imperial War Museum in London classifies their example of this piece as a "badge".

"Tokens" and "medals" are generally less popular with collectors than "coins"; they are also generally less well catalogued, and so finding current market prices for them can be trickier. As such, an item can be numerically quite "rare", yet still not very valuable. There is also the matter of difficulty of sale. Some countries restrict or outright ban the sale of Nazi memorabilia, which this would certainly qualify as. For example, ebay has a policy of banning the sale of all items bearing the swastika that were made after 1933; the only exceptions are coins, stamps, and models of Nazi military ships and aircraft. And, as noted, this item isn't a "coin" so is not exempted. So you aren't likely to find any on ebay, and if you were to attempt to sell it on ebay, it's highly likely it would be reported and the listing cancelled.

All that being said, another forum gave a quote (back in 2012) that these items seem to sell for around $50 to $150, depending on condition.

U.S. ebay (aka THE ebay) doesn't seem to care much... you'll find numerous sold listings for Hitler token or Hitler medal in completed items search... and on archive sites.

So they apparently aren't "auto-pulled"... but I could see a listing getting yanked if someone reported it individually, so some discretion would be advised. With some patience, advertised a bit carefully perhaps, you'd get $100 or a bit more for this. Always a market for this stuff...

BTW, far easier to list this than anything from a certain Clan... especially since I think they're technically a hate group or officially "domestic terrorist" or something like that.

Surprisingly, one even got through on Germany's MA-Shops... a handsome semi-PL example, PCGS approved!!!:
https://www.ma-shops.com/guth/item.php?id=138

to the CCF!

Bottom line, this is a pre 1938 Austrian Nazi receipt in token form for making a donation to the cause in Salzurg at the time. These are listed in Colbert- Hyder book.