Getting a new phone is very useful to someone that's a victim of a controlling partner but it doesn't particularly need to be a GrapheneOS device. GrapheneOS has features useful for this including Auditor and standard Android profiles (Private Space, secondary users) with improvements but we're not specifically recommending it for this ourselves. People who are victims of this probably just need a new phone of any kind and to prioritize other things.

> and 5-10x the price of an older, but still perfectly useful degoogled phone from Marketplace

Devices with drastically worse privacy and security than the Android Open Source Project including lack of bare minimum updates aren't in the same space as GrapheneOS.

It's generally better for people to install GrapheneOS themselves since it's very easy and saves a lot of money. It takes 10 minutes to install GrapheneOS with the web installer. It also avoids needing to trust a company to do it, although it's possible to verify an install done by someone else is genuine with the verified boot key fingerprint and/or Auditor. An existing install by someone else should be factory reset it to avoid any sketchy configuration.