Where can I buy cheapest san diego card for 5 days?

If you mean the "Go San Diego" card, Costco sells them at a discount.

You can also get them at travel sites online for a discount

http://www.viator.com/tours/San-Diego/Go-San-Diego...

BTW They come in 3,4, and 7 day, not 5 day.

Situated in Southern California, not definately not the Mexico line, San Diego is the oldest city in California, founded in 1769 and if you wish to know a town with a wonderful organic beauty and a pleasing climate, with mild temperatures and a lot of sun with hotelbye you should start. In San Diego you can visit: museums, gardens, Spanish Colonial type structure present in Balboa Park, the world famous San Diego Zoo, and the Midway Aircraft Carrier Museum. SeaWorld San Diego is one of the city's major attractions, specially for families. It is found along the waterfront in Mission Bay. For all American's SeaWorld has been quite a while family tradition, having been with us since the 1960s. Among the highlights are the assortment of reveals presenting monster whales, sea lions, dolphins, and different sea life. You can find a myriad of trips from roller coasters falling into water, to more sedate carnival form rides for tots. SeaWorld is an aquarium which allows for close up discusses sharks and different sea creatures that may be observed through an acrylic tube, alongside touch tanks, and shut activities with dolphins and inhabitants of tidal pools.

I have no idea what you're talking about and posting it twice doesn't help either