The market for used pianos is worse than terrible. Unfortunately, low-to-mid level pianos degrade with time, unlike good violins or 'cellos.

I have my grandmother's Apollo (Ralph Wurlitzer's discount brand) 5-foot grand from about 1930, and I may just have to scrap it at this point, even though my mother and I both learned on it, and it was my grandparents' first piece of furniture. Yours is in much better condition and looks like it was a better instrument in the first place. The big test is whether it can hold tune (mine no longer can) and the condition of the action, hammers, and strings. (I have had to replace several strings, and the keys no longer work freely.)