gradeornot

At the table

Is this trade worth it?

Put both piles in and see what each side is actually worth before anybody hands anything over. Turn the phone around and the other person sees the same numbers you do, which is the point.

How it decides

This is not an appraisal and it is not a guarantee. It is the same arithmetic on the same tables the rest of the site runs on, shown to both people at once.