I was thinking, that most people dont have decomp skills (to really make use of Decomp, you need to get it to 24k exp to decomp SBL HQ), hence the HQ materials are less demanding than MQ materials... hence they're quicker to get, and cheaper to get...

if you manage to obtain a good amount of LQ materials, i personally would rather make lots and lots and lotsa T1 scrolls with it, rather than using up the alchemy stones, time and materials trying to make it MQ....

Don't forget that the higher level scrolls need higher level materials.