Which innovative pricing strategy revolutionized the amateur astronomy market in the early 2000s, making telescopes more accessible to beginners?

The astronomy industry has seen remarkable retail innovations as telescopes, star maps, and space memorabilia have evolved from specialty items to mainstream products. This trivia question focuses on a groundbreaking retail pricing strategy that transformed how astronomical equipment is marketed and sold to amateur astronomers. Test your knowledge of this industry-changing approach that made stargazing more accessible to the general public!

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The Celestron 'Star Payment Plan' - allowing customers to pay for premium telescopes in monthly installments with zero interest if paid within one year
The Meade 'Observatory Membership' model - charging annual subscription fees for access to progressively better equipment rather than one-time purchases
The Orion 'Constellation Pricing' - where telescope prices were reduced based on the number of accessories purchased simultaneously
The Sky-Watcher 'Trade-Up Guarantee' - offering 80% of the original purchase price toward upgrades within three years of initial telescope purchase