Grades such as A, B or C are shorthand, not a standard. Two sellers can use the same letter for very different machines, so a grade is only useful when it is backed by specifics: year, working hours, what was replaced, tyre condition and a walkaround video.
Treat the grade as a summary and check the underlying items yourself or through a third party. A machine described as excellent with no verifiable hour reading should be treated as unverified, not as excellent.
Ask us for the model, tonnage or destination you have in mind — we reply with matching units and an FOB or CIF quotation.