Once again, Philip K. Dick comes with a future world full of interesting concepts ripe for exploration.
A societal divide between psychically gifted people with different abilities and the ones that fear manipulation and invasion of privacy by those people... An industry for an artificial afterlife to let the living communicate with their loved ones even after death... A capitalistic nightmare of having to pay your own apartment door with cold hard cash to be allowed to enter or leave... Lots of wild stuff.

The book introduces all of these subjects and makes for another typically entertaining Dickish scifi world. All the different elements make for lots of creative implications that could have been explored much further and the book very often made me wish it would take a step further before moving on some other way.
For example, when a psychically gifted character is introduced with complicated, potentially god-like time manipulation abilities fairly early on, I was very curious how Dick is gonna handle this character without writing himself into a dead end or a deus ex machina situation. But the story pretty quickly went into a completely different direction that left all of that potential behind for the most part.
In some ways Ubik is like a colorful bag of clever individual surprises, but things can feel a bit disconnected which made the stakes less effective for me. In fact, I wish the book was longer to tie things up more thoroughly.

As it stands, Ubik was an entertaining casual read, but not a book that left much of a lasting impression on me. It's well-written and got those fun creative ideas from Dick, but didn't tie it all up into the neatest package.