Q: What is the pricing model for an extension?
A: Usually, extensions have no license fees, but an annual subscription fee (on average 3 000 EUR p.a.). Cloud extensions have typically additional volume-based fees.
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ezpublish / documentation / faq / ez market / q: what is the pricing mode...
Caution: This documentation is for eZ Publish legacy, from version 3.x to 6.x.
For 5.x documentation covering Platform see eZ Documentation Center, for difference between legacy and Platform see 5.x Architecture overview.