Granted the heart i saw sold for the 2mil a while ago, the price has dropped now as far as i can see, considering the increase in drop rate and the amt of people farming it now, but the mats from coil u only have 1 chance every week to get it and you also have to consider 7 other players from your group thats going to get it.So these mats from coil will be at a very high price due to rarity.HM Primals mats are also rare but u can farm it everyday of the week infinite times. Comparing an item that drops once every week with a 1:7 chance of even getting it to an item u can farm every day yet still having that 1:7 chance of getting it is rather stupid.Also HM primals mats should be at a constant price around 500k-700k gil, but players dont know how to play the market and the prices will just drop and drop more and more lol might start selling at 50k-150k in a few weeks. :P