Several reputable sites are authorized to sell Universal tickets at lower prices than the official website. These include:

Scoring a deal on Universal Studios tickets is all about avoiding the "gate price." By planning ahead and using authorized partners, you can save anywhere from $20 to over $100 per person. 1. Never Buy at the Front Gate

The most expensive way to visit is by walking up to the ticket booth on the day of your visit. Always purchase online in advance to save at least $20 on multi-day tickets. 2. Use Authorized Third-Party Sellers

The 6 Best Ways to Buy Discount Universal Tickets - NerdWallet