Got the tier 1 deal and recently upgraded to tier 2. The image upscaling works great for low-resolution pictures found online or old photographs. Very happy with it, better results than other tools! It seems, however, that their model is not optimized for faces, the competition works better for potraits.
For video, the quality depends on the input. I used it mostly with low-res footage which feels less "magic" compared to the images.
There's now an option to enhance only certain timestamps of an uploaded video, which speeds up the process enormously and cuts costs.