For open hardware devices under $250, how much does OSHWA certification or published design files actually affect real-world repairability?

There's a meaningful gap between a device being technically open and being practically repairable. OSHWA certification and published schematics are useful signals, but they don't automatically mean replacement parts are stocked anywhere, that tolerances are forgiving enough for home fabrication, or that the toolchain required to reproduce a component is accessible to someone without a well-equipped shop. For devices in the sub-$250 range specifically, the open documentation often matters most at the margins. A published BOM helps you source a capacitor or a specific connector. A released PCB layout helps a repair shop diagnose a failure. But if the enclosure requires a proprietary mold or the firmware is technically open but practically undocumented, the certification starts to look more like a badge than a guarantee. So the question is: for devices you'd actually recommend in this price range, does the open hardware status translate to a meaningfully better repair experience compared to a well-supported but closed device with good third-party parts availability? And are there specific examples where the published design files made a concrete difference, not just in theory but in an actual repair or modification scenario?