This included addon tool allows you to make changes to your existing clients pricing.
First activate the module under Setup > Addon Modules it can then be accessed via the Addons menu.
To perform an update, you need to select the products, services and/or domains you want to update, the statuses to apply it to and the billing cycles. You can make multiple selections using Ctrl+Click for any of the options.
You must also choose a currency to update and can optionally specify the current price to only update items whose existing price is a specific value (thus excluding promotion amounts for example).
Once you've made your criteria selections and entered the desired new price, click the Update Pricing button to run the update.
A confirmation summary will show once complete indicating the items that were changed.
Domain name wholesalers have recently set a precedent of annual price increases, this tool really comes into its own here so a detailed step-by-step guide is available here.