From now until December 6th, 2014 Target is offering a free minifigures gift set with purchase of $50 or more in select Chima, City, Ninjago or Super Heroes themes. The set contains Superboy, Swamp Cop, Lavertus from Chima and Green Ninja from Ninjago. You can also purchase the set by itself for $15.00.
You can follow this link and look for the Free Gift qualifier on the sets listed. Target is also still running the free shipping promotion until the end of the holiday season; Free standard shipping (3-5 business days) for the 48 contiguous states. As always, you can also save an additional 5% if you are a REDcard member.