Pretty sure Linode is comparable price wise and in Europe there are cheaper options like OVH. Digital Ocean pricing becomes pretty comparable with GCP and others when you start specing up to a "production-grade" server i.e. the kind of server you actually want to run Postgres on.
Their K8s offering I think is the cheapest of all major providers but you lose out of secondary benefits like GKE's fantastic log analysis tools (I think its called stackdriver or something).
Their database offerings are in about the same range as other providers (not comparing it to Google Cloud $panner).
Just popping in to say that OVH is the cheapest option for a reason -- support/monitoring/any other features you might want are just not there like they might be on other providers.
I host a single tiny website on OVH and they restart it randomly every ~4 months without warning (seriously). It was annoying at first until I set our services to run on system boot.
I suppose it depends on what OVH offering you buy. I have multiple servers at OVH with multiple years of uptime, but those are dedicated ones and not the cheapest Kimsufi offerings.
Their K8s offering I think is the cheapest of all major providers but you lose out of secondary benefits like GKE's fantastic log analysis tools (I think its called stackdriver or something).
Their database offerings are in about the same range as other providers (not comparing it to Google Cloud $panner).