If your gripe is when searching for materia itself to purchase that it all shows the lowest value, that is noted in the current known issues and a fix is on the way.
until then notice what everyone else has been doing since october when they sell materia and the last 2 digits of the price indicate the stat numbers.
for example, a +44 crit attack power materia would be seen on the search as 800,044
World Of Warcraft: ~Retired~
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Evokur - 70 Blood Elf Warlock - Mug'Thol
Final Fantasy 11: ~Retired~
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