12 Dollars for parking is extremely reasonable, especially considering the tram service and well maintained facilities Disney provides. Here in SoCal, Disneyland parking at 12 bucks per day is the bargain of the century. Look at some of these other entertainment venues near Disneyland and gasp at their parking rates!....
San Diego Chargers (a 1960's stadium in the suburbs surrounded by acres of parking lots and suburban sprawl)
Outer Ring General Parking - 25 Dollars
Inner Ring Reserved Parking - 45 Dollars
VIP Preferred Parking - 75 Dollars
Los Angeles Lakers (Staples Center near downtown LA)
General Parking - 20 Dollars
Preferred Parking - 35 Dollars
Valet Parking - 50 Dollars plus gratuity
San Diego Padres (Petco Park in downtown San Diego)
Designated Off-Site Garage - 8 Dollars, 14 blocks from stadium, or three stops on trolley plus round trip trolley fee of $2.50
Orange Zone Parking - 10 Dollars, three blocks from stadium
Preferred Parking - 20 Dollars, one block from stadium
John Wayne OC Airport (closest major airport to Disneyland)
Offsite Satellite Parking Lots - 17 Dollars per day, shuttle bus ride required
Terminal Parking Structure - 20 Dollars per day, short walk to terminal
Terminal Valet Parking - 30 Dollars per day, plus gratuity
12 bucks for parking at Walt Disney World or Disneyland is a bargain! And at WDW, don't you get a monorail ride or ferry ride included in that price?