This puzzle can be bought directly from SmaZ on the Twisty Puzzles Forum.
It is called the Time Machine because it is inspired by the Smart Alex, a very rare puzzle from the '80s - '90s, and Time Machine stands for playing with a puzzle back in time.
One Week Later:
The turning has improved drastically and the stickers are staying on there with ease. However, because all of the stickers are hollow, dust is gathering near the edges. But the dust is easy to clean off. I have attempted to solve it, but one face's numbers are all messed up. I would have to spend time on it in the summer. For me, I would say it is worth more than what I paid for.