I regret selling it...sorta...
If you are patient and can get past that, then by all means, buy it if you so desire.
The system is a bit difficult to deal with at the beginning but it all just takes some getting used to, at least...about a month or so, writing down most things...
It introduces a 3rd perspective battle system, an improvement over the default battle system RPG Makers 1 and 2 provided, it is, in fact, inflexible...increasingly inflexible...
Personally, I had fun doodling around with the game rather than taking it uber seriously and trying to finish the game, I actually made a restaurant called Churri's and it sold healing items with names like Culoggets!
Most of all, just have fun with it!