The buy price

The buy price is the most to pay for one copy and still keep your margin.

What it is for

The buy price is the most to pay for one copy of this card and still keep your margin.

It is for the person on the other side of the table. It never reaches a listing.

Where the target lives

Buy price target is a row on Templates and pricing. It is one number for the whole account, and every card uses it.