There’s MetaGer (https://metager.org/) which is run by German non-profit NGO SUMA-EV. Instead of a subscription it is a pre-paid key that’s consumed per search, so you only ever pay for what you use. The NGO is also part of the European effort to build an OpenWebIndex. Disclaimer: I’m part of that NGO.
Yes, this is currently a problem since we were forced to discontinue the only way to use MetaGer free of charge (for now). I do hope that there will be a solution within this year. In the meantime I’ve sent you a demo key via DM.