It's that spooky time of year when all of the monsters run free and create chaos, not unlike yourself. In an effort to support your bloodletting, I, your local merchant am offering you a discount on some goods you may find most titillating... A new sword perhaps? Maybe some caustic liquids?
What about an entire world that you can run around freely in and do as you wish?
A little pocket dimension - just for you! My best customers always get the best items.
I'll even throw in a discount, but be sure to keep this between you and I. I wouldn't want anyone else realizing the deal you're getting and demanding the same. So how about it?
30% off through the week of all hallows eve! Grab yourself a copy and get to chopping my dear friend.