I've posted before that the same Elementary Problem Solving I and II courses available from JHU CTY for $640/3 months are available directly from the software company. Finally found the link: http://hmlt.hmco.com/DM-EM.php and the email:

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Thank you for your inquiry and for choosing Riverdeep for your software needs.

You may phone our customer support group for assistance with your single subscription for Destination Math. Annual course licenses are $59.99/each course/year.

They may be reached at 800-825-4420
Hello, bargain shoppers!

ps - Hi, Ania - I know you'll stop by for a math post!