Looks interesting, but it’s almost 50% of the price of the Star Adventurer...by the time you add it up, you’re almost in EQ5 territory.
My experience with the wedge so far is this...there is some backlash in the mechanism, but if you get it close and then turn the lock lever, there is still some movement in the altitude screw, so just turn it until you’re in the right spot (I go against gravity).
The thing with the Star Adventurer is that it weighs so little that if you’re tripod isn’t fixed to the ground, any rough handling in adding or moving the camera gear can push the polar alignment out purely from the tripod legs moving...especially problematic when the ground is dry and dusty! A little care and it’s possible to maintain good alignment, although I tend to leave the illuminator in so I can check it after I’ve framed the target
