Trusted sites like Undercover Tourist or The Park Prodigy often provide slight discounts on multi-day tickets that you cannot get at the physical ticket booth.
Buying online allows you to skip the long ticket booth queues, which can save you an hour or more of prime park time. How to Actually Save Money Online cheaper to buy disneyland tickets online
When purchasing Disneyland tickets, the price for a standard admission is typically the same whether you buy it online or in person at the gate. However, buying online is almost always the "cheaper" option when you factor in time, availability, and potential third-party savings. Trusted sites like Undercover Tourist or The Park
Tickets can and do sell out. If you wait until you arrive at the gate, you risk the park being at capacity, making your travel costs a wasted expense. However, buying online is almost always the "cheaper"