Hi, everybody. I'm the author of this modification.
It is currently only available in China, and will be released in November with a self-assembly kit that you can install yourself.
The installation isn't complicated. You just take off the screen and don't have to take the device apart. The whole process takes about 20 minutes.
No parts are damaged and can be restored to factory state.
For $249, it's available through paypal for two to three weeks of shipping and $30 to $40.
I would declare a lower value of the item to reduce the tax.
Contact me at firstname.lastname@example.org