We have a super-dollar making imports cheap, low fuel prices are finally filtering into the distribution network, and contrary to what most people think, we are still fighting a highly deflationary economy. Not inflationary at all.
Manufacturing prices are plummeting thanks to automation and it is also localizing. Distribution is also getting highly automated and there will be a revolution there soon with networks like Amazon's drones.
Problem is that all these automated technologies are taking a lot of jobs and thus, spending cash. There is a glut of production and still not that much money to purchase it yet, prices are crashing trying to chase what little money is out there. That will change though, freeing people from labor always benefits an economy in the long term and new industries will emerge.
This is probably just the start of things getting much, much cheaper.
The 40 hour week might not last much longer as a consequence, there isn't enough work to justify it anymore. Used to be that a workday was sunup to sundown, things change and it might be bumpy along the way.