The current July LEGO Shop@Home promotion is a free Hot Dog Cart polybag with purchase of $75 or more. Don’t forget that you can combine this with the free shipping offer.
July also marks the availability of the Tower of Orthanc (10237) for $199.99
Looking towards next month, August will have 2 more promotions. You should be able to stack both of these offers if you buy a $50 LEGO Friends set such as the Dolphin Cruiser.