The Star Wars Day range includes apparel, toys, replicas and collectibles such as a $75 Princess Leia romper, a $40 Mandalorian figure and a $120 voice-changing helmet.
Shoppers must join a queue and have 10 minutes to complete purchases, as Disney warns some items could sell out quickly.
The release ties into May the 4th celebrations and the upcoming The Mandalorian and Grogu film, which reaches cinemas later this month.
Has Disney's 'May the 4th' celebration evolved from a fan holiday into a high-pressure sales tactic?
Will this massive merchandise launch guarantee a blockbuster opening for a film already facing mixed early reviews?