Amazon has all LEGO Dimension Starter Packs for $60 each which is a 40% discount. You can choose between PS4, PS3, Xbox One, Xbox 360 & Wii U versions.
In addition, Level Packs for Back to the Future, Portal & The Simpsons are $20 each after a 33% discount. If you don’t own any yet, these prices would make a good entry point.
33% off – LEGO Dimensions Level Packs – $20 each
40% off – LEGO Dimensions Starter Pack – $60 each