HRO generally has one or two single band radios available at a reasonable price:

https://www.hamradio.com/detail.cfm?pid=H0-011362

Any of the radios that have a dedicated packet port in the back.

For a list of radios with the mini-din data port:

https://groups.io/g/nwaprs/wiki/3574

The TH-V71 is currently the best off the shelf radio for packet you're
willing to invest a bit more.

Bill