The problem is that larger manual machines in good used condition are plentiful. You could get a nice Polish made machine in same size class for 5000. You can get a bigger one in Edmonton for less then $3000. Yes these are used but selling price is similar to scrap price - they are not worth much.
Reason they are not worth much is same as why large shapers are not worth a lot - they take a lot of space BUT do not produce a lot of $ + they are rather big for hobby use. Thus commercial guys would rather get a 150k brand new CNC machine then a 70k (!) nice manual machine.
For repair shop work usually a BP is enough. Or if you want to go BIG there are plenty of used options selling for ... scrap x2 price. Also these cheap machines may have not that much wear and tear + are not Chinese made but popular brand names.