I thought they weren't able to increase the price at renewal
/rant on
Originally the 'premium' scam was higher reg only, normal renewal.
A couple of registries then started making transfer higher, followed by reg & renew & transfer all being 'premium'.
Then as they realised no-one policed the number of 'premiums' properly ( dodgy board members taking working group advice out of contracts / handbooks ) it started to get obscenely out of control.
As registry premium names are outside of the former price controls and not subject to the usual terms, it went from a higher reg and that same extra amount at ongoing renewals to a 'up by a factor of whatever we can con the registrant out of' at renewal.
Greedy scum at legacy registries started to get bought out by the greedy scum at new registries fatter than they were ( or simply became better at under-table stuff) so now it's becoming 'normal' for long existing domains to get 'reclassified' to be 'premium' - dotBIZ did this with all their 3letter and shorter names - so a registrant of 12 years with a 3 char .biz can be screwed for more cash
Horror stories ( or cautionary tales depending on your worldview ) of renewal fees being 4000% over the originally exploitative 'premium' reg fee on a 3 year old name get shared quietly, a registrar publicly shaming a registry finds they cant manage their
existing premiums / names.
In the incestuous plague pit that most GTLDs reside things like
POA pricing for reg and negotiation at renew
Only allowing you to keep a premium name if they approve your business plan for it
Creating 'groups' and 'categories' of premiums, then limiting which registrars can handle some groups
and a whole plethora of slimy knotty toady schenanigans more
/rant off
I push back on stuff like this at ICANN, IGF and related events regularly.
Sadly, the ratio of sane-people to power-hungry-busybodies in Internet Governance being at best 1:500, the bulk of things regulated are about whether an rdap complaint should have the domain capitalised in the ticket notice rather than any actual solutions to genuine problems.