In the early 2000s, Oxford University Press dramatically changed their pricing strategy for the Oxford English Dictionary. What innovative approach did they introduce?

Dictionaries are fundamental tools in language learning and linguistics. Over the centuries, their pricing models have evolved dramatically, reflecting changes in production technology, market demands, and publishing strategies. This poll explores an interesting pricing phenomenon that occurred with the Oxford English Dictionary (OED), one of the most respected language resources in the world. Test your knowledge about this iconic linguistic product's pricing history!

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Subscription-based online access, moving away from primarily selling physical copies
Pay-per-word model where users were charged based on how many definitions they looked up
Freemium model with basic definitions free but etymologies and advanced features behind a paywall
Regional pricing tiers with different costs based on GDP of the user's country