Acceptable mileage is what your happy with, a car does not start to corrode at a certain mileage. I sold a 2004 zed last year with 35k on the clock with no visible signs of rust, good luck with your search
Umm probably to do a pandemic, personally i dont really want to be around to many people at the mo, even though i have been double jabbed, but i hope you guys have a good day there