Comment by ameliaquining

AGPL software is in practice always gratis, because anyone who has a copy can post it on the internet where anyone can download it. The monetization benefit of AGPL is that it makes it significantly more annoying (but by no means impossible) for IaaS providers to sell managed hosting for the software without making a separate commercial agreement with the copyright holder. This usually isn't relevant to dev tools that users run on their own machines.