The automatic calibration works sometimes, but I really prefer to calibrate it manually I think. The print goes better that way. I also prefer to calibrate the Up plus 2 manually too. I don´t know I think that works for me. I haven´t had other big issues, and when something come along, I call support.
I don´t know how expensive it would be to send it to US from Canada, maybe like $160 usd. That info is truly mine, for my experience using both machines in our printing hub, in the other hand, actually we are Tiertime resellers in US and no good luck selling them, I think as you said first, there is no much info with reviews and stuff that make people what to buy them, but I believe they are quite good printers. But If you decide to buy one, here is my info firstname.lastname@example.org