Our Extra Message bundles are priced as such:
 $10 - 500 messages
 $15 - 1,000 messages
 $25 - 2,000 messages
 $50 - 5,000 messages
 $100 - 12,000 messages
 $200 - 40,000 messages
 $330 - 100,000 messages
 
Please keep in mind that Extra Messages will only kick-in when your account's total messages remaining is at 0.  Unused monthly Extra Messages will roll over into the next month and are purchased as needed.

To add your Extra Message bundle, login to your Seller Labs Dashboard and select "Manage Subscriptions" on the left. Under your Feedback Genius subscription, select "EDIT" next to Overage Emails, then follow the onscreen instructions to add the bundle.

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