DH wants to drop $1500

On tickets to get us into the park. He has gone to one website where we can get 6 days worth of parks for $1500. The thing is, we don't need 6 days. We need 4. I know that the more days you do the better the deal BUT like I said we only need 4 days.
So does anyone know of a website or anwhere where we could buy a 4 day pass,
DH says the 3 day is only $30 less than the 6 day and there is no 4 day

Any suggestions would be appreciated.