Don't buy too much, if your not a farmer Might get raided by CIA for other uses for fertilizersIf I were to purchase a bulk amount of fertilizer and part it out, what fertilizer would you want? Place your vote on the poll!
KNO3 is already available, check the equipment classifieds. $10 for 2lbs.
I can buy other fertilizers if interest is great enough and I break even with the potassium nitrate.