.. YEERRR HAAARRR.. hang on to your wallet on these babies.. they ain't miss printed.. just bloody unrealistically expensive... If you think this is expensive.. try the part number on ebay US.. 527077 for a comparative GM NOS price..

These are GM originals in the GM  Box NEW OLD STOCK.

Just the cap.. no emblems... which is because the emblem can be Red winged or Gold Winged..   Full Repro kits are available also.

They are a specific size and design? cost is hard to justify but looks better than repro or used.