I have pretty much that exact machine. It is essentially the same as a Grizzly G4000, I have used Grizzly parts on my Enco. The G4000 sells for $1200 new +tax and $199 shipping. The stand adds another $315.
This design has been around for 40+ years sold under a variety of brands, Enco, Grizzly, Central Machinery, Jet etc so they are pretty common. I got mine a couple years ago for $300, but that was admittedly a good deal. $500-1000 seems to be pretty common, with the Jet lathes usually selling for a bit more than other brands.
They are a big step above something like the 7x14, but only a few inches longer / deeper. I think they are a nice small lathe option.
The gear box is primarily for the power feed, it will do a few different threads on a set of gears, so potentially you could get lucky and find your most popular threads fit into a set of gears, but you will not get away from change gears.
This is going to be the case with pretty much anything in this size class, you have to go vintage USA or 12" and larger to get a full gear box.