im thinking the prices have gone up since u purchased

unless im looking @ wrong section of SeaWorld's site
One day non-discounted tix is $78.95 (i think)
less 20% southwest RR card discount @ gate $15.79 = $63.16
plus tax 6.5% total
$67.27
vs
pre-purchase on sea world's website of
$68.96 (child price special), not sure if it includes tax or not