Is there any legitimate place to buy park tickets at a discount?

[beercity]

https://touringplans.com/walt-disney-world/ticket-calculator-disney-world-ticket-discounts#

That link may come in handy for you.

This is a good tool as you may not always save money on third party sellers. I used the tool for an upcoming trip with 6 adults and 1 child, and the total cost difference between gate price and third party was 6 cents. Not worth it to me to buy somewhere else.

 

[Chrislovesdisney]

We were able to get 5 days for the price of 4 on top of the undercover tourist slightly cheaper prices. This was before the new price structuring. It essentially allows us to pop into MK on arrival afternoon, so that when we rope-drop later in our stay, we can run to the rides and not have to stop for the awe of being in MK. Plus, 3 more FP this way!