IMO The Sony streamer cams (ZV1, ZVE-10) are the cheapest way to get into the ecosystem used. They sold a ton of them in the last 4 years to normies who wanted to be the next YouTube Star, who later either realized their phone was easier + more accessible or gave up their hopes of fame. So they end up selling the cameras for 50% off what they paid for them used.
I'm seeing prices of $350-500 for a used ZV1 (RX100VA with no viewfinder, usually the RX equivalent is $6-900) and $450-600 for a used ZVE10 (A6400 with no viewfinder, the A6400 is closer to $600-900 used). I'm a Nikon shooter on the market for either used at this prices to fuck around with