passing this along from Lisa S. of In Him Homeschoolers . . . the savings is significant.   Thanks for the great tip!

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https://www.homeschoolbuyersco-op.org/index.php?option=com_epp_offer&Itemid=345

for example:  20%-off group-buy price is $85!!!

A Co-op Group Buy Exclusive:         LEGO® Education . . . Hands-On Math & Science Learning
Offer Expires 09-21-2008 at 11:59 pm Eastern