I would agree with RileyRat that all the economies have gone to hell in a handbasket over the last several months (PS2 and Europe have contributed to the demand for items) and it doesn't look like they are going to be able to get it under control.
i don't think simple items like the emp hairpin are worth 1 mil, that's just overdone, heck the leeping boots are up to 800k and who get's that kinda money honestly <not buying gil>
To this point, I have to say that I have never "bought" gil and i have both the emp pin and leaping boots (both purchased in the last 3 months). Don't underestimate the amount of money you can make fishing and synthing! You can become very "rich" by crafting, you just have to have the patience to do it.
Just my 2gil