I'm very happy with the cover lifter, however what is not explained in the description, is that if your spa pool is only 800mm high, you need to trim the upright support poles, as they are too high. You also need to shorten the poles of the cradle where the cover sits as they will be too long. Oh and you need to drill new holes so the pins line up on the shorter poles.
And I think the $45 freight charge is a bit of a stretch, describing the package as over sized.
But now that it's all the right size, it's a good product. Just suited for bigger pools I think.