There's plenty that are around the $130 level, like Google Nest Wifi. Plus, the U6 Enterprise is only an Access Point, it's not the full router. It only connect your wifi to your Unifi network.
Sure, it's just an AP, it connects wifi to you network. But there's no requirement to use unifi for the rest of your network. Personally I'm happy to trust ubiquiti with my AP, but not with my router.