Random Surface RT stuff: Sales

I guess there is a Murphy's Law corollary that states that after you purchase something you will find it on sale. 

Well, there has recently been a sale on some of the stuff I purchased from the Windows Store (apps for my Surface RT). Actually, probably half of the apps/games I purchase have later gone on sale.  The games that haven't gone on sale were most likely free. 

Anyway, this time the there are two sales (who knows for how long).  The Miniclip stuff (Gravity Guy, Monster Island, and iStunt 2) are currently free.  There is also currently a sale on some Microsoft published titles (there are six of them, I forget what they are). 

So, I guess the lesson here is to wait to purchase a game for a month or 2 (until there might be a sale/ price decrease).