There's this, https://play.date/. Haven't heard much news about it lately though. Feel like any handheld built around a relatively cheap microcontroller should be shooting for a much lower price point.
Economy of scale only saves you so much at small batch sizes, plus I assume the unique input setup drives up the BOM price a fair bit.
I think they did a few blogposts about having initial teething troubles getting consistent manufacturing, so they might have a significant upfront expense cost to subsidize (which probably explains why they're raising the price again...)
