I have the same thoughts as Baron. The press included with this "Juice Box" looks like a 10lb clamp from Harbor Freight. It won't be able to clamp with a fraction of the force as the 600lb Irwin clamp supplied with the Cannaclamp, so the extraction efficiency will be much lower.
The force at the platens is so low that the manufacturer is not even willing to disclose it.
There is no temperature control, so the device is useless for pressing the more delicate materials that might actually be possible to get a decent yield with at low force (Kief and hash). 250 degrees? I press hash at 160-180. At 250 the hash and rosin will be ruined for my palate.
I personally wouldn't waste the money on it, especially since, a properly engineered, warrantied, well reviewed product with plenty of clamping force and easily controllable temperature settings may be easily obtained for just a few dollars more. The CannaClamp v2.0 has been released:
https://midwestconcentrates.com/version-2-now-shipping-hightimes-2nd-place-best-product/
Baron- just make sure your press has a gauge so you can see what's happening as you use it. I own a Dake press and it's very affordable to build, caged plates will work best with that type of press.
If you're willing to spend the money, TimeWizard Grey Fox developed a very small, portable 20T press with 6x4" platens and BVA hydraulics. Super quality gear.