Best tool to find ungated products as a new seller?

Tons of tools out there as we all know. Only thing is when you’re a new seller, dang near everything is gated. Is there a tool that has a ungated feature ? Or is able to link to your amazon / browser to see best items to sell that are ungated? Its unruly to look one by one (click listing and scroll to see if “sell now” button is there). When I use to sell years ago, it was total opposite, almost everything was ungated lol. All help is much appreciated, thanks!