Clearly people are buying it, or Square-Enix would lower the price. Not me, though. Not when Chrono Trigger's always-on DRM doesn't even work with my device (even though the Galaxy S III is one of the best selling Android devices ever and really should've been a priority for them), not when FFIV is based on the chunky and poorly-acted DS version instead of the beautiful PSP version, not when FFV has lifeless, oversmoothed sprites that don't even look as good as the blocky pixels from the original.
To be fair, Final Fantasy Dimensions is something I've actually considered paying full price for. It's a brand new game that I haven't already bought repeatedly, its art is mediocre but at least not at the expense of better classic art, its DRM is simply a one-time activation, and reviews seem to be generally positive. I certainly won't be buying any other recent mobile Square-Enix games, though.
P.S. Thanks