I haven't broken it down to cost per gram. They are cheaper than other nutrients at base cost (other nutrients being Dutch Masters, Yellow Bottles, Advanced, etc..the major players in the market). You use less than the other nutrients, the solubles are a smoking deal...you use 1/2 tsp per gallon and one of those clear containers costs 14$ and will last at least 2 runs. I used to swear by Yellow Bottles...they are the priciest line out there as far as I know...kick *** for synthetics.
That's the thing I really like about this, my cost per gram will drop from yellow bottles, perhaps stay the same or a little less than Dutch Masters and it's 100% organics....to me, that's a no brainer simply for environmental issues/reasons. Take in to account quality of the finished product and your way ahead of the game imho.