Warlord Games is giving you an opportunity to get into one of their game systems with their Summer Sizzling Starter Sale (holy alliteration, Batman!). Pick up the rulebook for one of their various systems and you can get a plastic box set from that system for free.
The deal is good for the Bolt Action, Hail Caesar, Black Powder, and Pike & Shotte game systems. While the graphic and website show specific box sets, it's actually your choice for which one you want to get for free. So you're not just locked in to what you see in the image. The sale lasts until the end of July.