http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7983765134&sspagename=ADME%3AB%3ASS%3AUS%3A1
$499 buy it now. It's not my listing, but I know everyone is looking to upgrade their old 4 spoke wheels to 3-spoke and this isn't a terrible price for a leather airbag.
The used 3 spoke wheels come up all the time, but not airbags as everyone is upgrading the wheels and not the airbags.