Which retail promotion strategy has proven most effective for astronomy equipment retailers during major celestial events like meteor showers or solar eclipses?

The astronomy retail sector has evolved significantly over the past decade, with specialty stores and online platforms competing for the attention of amateur astronomers, professionals, and space enthusiasts. This trivia question explores a unique marketing phenomenon that has become increasingly popular among astronomy retailers seeking to boost sales and customer engagement during specific astronomical events.

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Time-limited 'Eclipse Bundles' that combine telescopes with specialized filters and viewing guides at a premium price point
Buy-one-get-one promotions on all astronomy products during the week of the event
Flat 40% discounts on all telescopes and equipment during celestial events to maximize sales volume
Post-event clearance sales featuring equipment specifically designed for the just-concluded celestial phenomenon