You can charge different amounts to place listings using the price field value through this admin tool. Starting with 0 create a bracketing system and charge differently for each bracket you create. Once you start a new bracket you must finish it with an increment that has "price field high" set to "and up", or there will be "holes" where a price could not be charged to place a listing.

Note that the increments are saved on a per price plan and per category basis (if you are using any category specific pricing).

This is the "low end" of a price increment. It will start at 0 for the first increment, and from there it will be whatever the previous increment's price field high is set to.

This is the "high end" of a price increment. If you specify "and up", this will be the last price increment.

This is the fee for placing a listing with a price that falls in this increment.

This is the fee for renewing a listing with a price that falls within the increment specified.

Currently the only way to edit an increment that is already entered, is to "start over". To "start over":

1. Make sure the last increment has Price Field High set to "and up": Look at the last increment entered, at the Price Field High, if it is not "and up": Create a new price increment, with the Price Field High set to "and up", and click "save increment" to apply the increment.
2. When the last increment has Price Field High set to "and up", the next increment you add will clear all the current increments and "start over".