Which innovative pricing strategy did Celestron introduce in the early 2000s that dramatically changed the amateur astronomy market?

The astronomy retail market has evolved dramatically in recent decades, transforming from specialty catalogs to sophisticated e-commerce platforms. With the rise of space tourism interest and citizen science initiatives, astronomy product retailers have had to adapt their marketing strategies and pricing models. This poll tests your knowledge about an interesting pricing strategy that revolutionized how telescope manufacturers approached the consumer market.

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The 'First Light' program that allowed customers to return telescopes within 90 days if they weren't satisfied with their first viewing experience
The 'NexStar' subscription model where consumers paid monthly for increasingly advanced telescope features and software updates
The 'GoTo Revolution' that significantly reduced computerized telescope prices, making advanced star-finding technology affordable to casual astronomers
The 'Constellation Financing' that allowed customers to start with basic components and add premium elements over time with guaranteed price locks