We are currently considering offering cheaper LineageOS phones for around 200 USD but have to work out some concerns. LineageOS is not entirely degoogled nor is it secure. Measures can be taken to fully degoogle it but the security features present in CalyxOS and GrapheneOS cannot be easily added. Unlike CalyxOS and GrapheneOS LineageOS does not support verified boot so the integrity of the software is not well protected. If you are interested in a custom solution despite this contact max@privacypractical.com and we can discuss a solution.