2006 UNC 50c COMMONWEALTH GAMES GYMNASTICS COIN ON CARD

[runway]

Why is this 50c coin harder to obtain than the rest of the series?
I seen this listing on eBay and yeah he's dreaming I know but the coin is same mintage as the rest of them
 http://www.ebay.com.au/itm/231279305288?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

[Oldcoinchest]

yeah dreaming indeed, even still dreaming if you moved the decimal point to $29.99, good luck