Clue | Source | Date |
---|---|---|
Sort of pricing model with multiple tiers | New York Times | 31 May 2019 |
Sort of pricing model with multiple tiers | ||
Pricing model for many apps | New York Times | 08 Oct 2016 |
Pricing model for many apps | ||
Business model in which only the deluxe version of a product costs money | ||
Modern-day business model offering partial complimentary goods |