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		Standard details	Student details
	RPN Advanced postfix calculator.	$29	$19
	Equate Advanced algebraic calculator.	$15
	Tangle Endless puzzle-logic fun.	$14

These purchases use PayPal and deliver your registration code to you immediately. Note, Paypal no longer requires you to create a PayPal account to purchase; you can securely and simply use your credit card.

If you prefer, you can Purchase through Kagi.

All purchases are covered by the License Agreement.