Cheaper on Best Buy’s website, and average reviews. Intrigued but passing.
[Mod note: Not available for shipping, and not present in all stores]
Just a technical note: this is not a “zoom” lense. A zoom lense has a variable focal length creating different powers of magnification across a continuous range. This is a telephoto lense with a fixed magnification of 8. The adjustment shown is for focusing the image.
I bought one. Image does not focus. Fuzzy, grainy pictures. Maybe I got a lemon, but I wouldn’t recommend product. It comes with a note that asks customer to contact them by email if you have problems with the product, but there is no email addresses on the note. 
So, lesson learned.