IPv6onlyhosting: 2.5 CHF IPv6-only 1GB KVM in Switzerland
They provide IPv6-only KVMs in Switzerland, starting from 2.5 CHF (~2.51 USD) for 1 core, 1 GB RAM, 10 GB SSD. Network is unmetered fair use.
By default a single IPv6 is assigned, but a /64 can be provided for free on request. rDNS (PTR) can be set. Outgoing IPv4 access is possible via NAT64. I was surprised and pleased to see that the Devuan logo is prominently shown among the technologies used, and Devuan itself is available from the get-go as a distro option.
I have not personally used their service, but I contacted the support to find out some of the details above, and the reply was very quick and friendly. If anyone buys this, do share your review!
Oh and this seems to be their actual DC: