I would be skeptical, as any healthy normal human would be. If you decide to purchase it, it would solely be for entertainment purposes only. I would not purchase it fully expecting it to work. It could be pseudoscience or a scam, or it could be a genuine early adoption of a time machine that may work in a very specific way where the average person may not be able to make use of it. Unless it's a perfected device that can definitively send you through dimensions or time, like John Titor's supposed time machine, then I'd equate it to purchasing x-ray specs out of the back of a comic book from 1993.
If you buy one, can you please post and share your experiences here?