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Welcome to The Principia marketplace

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Welcome to The Principia marketplace - a convenient online location to order and purchase items, make reservations, and handle other online transactions.

To 'Register' and establish an account within the Marketplace payment system for ease of later payments, click the link at the top of this screen. You do not need to register within Marketplace unless you wish to save your address and payment information for later use.

You have the option to pay directly from your bank account (Checking or Savings) or by credit card (Master Card, Visa, American Express or Discover).

Principia College

Principia School