Which e-commerce innovation had the most significant impact on making high-quality astronomy equipment more accessible to amateur astronomers during the 2010s?

The astronomy industry has been transformed by e-commerce in recent decades. Major telescopes, equipment, and astronomical tools that were once only available through specialty catalogs or physical stores are now widely accessible online. This poll tests your knowledge about how digital marketplaces have changed the way astronomy enthusiasts and professionals acquire their equipment and how this shift has impacted the industry's growth and accessibility.

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Direct-to-consumer telescope manufacturing models that eliminated traditional retail markups
Virtual reality previews of telescope views before purchase
Subscription-based celestial object tracking services
NFT ownership of discovered celestial bodies