Thumb Score: +1

Amazon is selling Rock Band 4, game only for PS4 for $ 29.99. This is the cheapest it has been.

http://www.amazon.com/Rock-Band-4-PlayStation/dp/B00Z9HSBNW?psc=1&SubscriptionId=AKIAJ7T5BOVUVRD2EFYQ&tag=cameltwalerts-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00Z9HSBNW