If you are just getting Copper sulfate you can get it at your local F/S store or Tractor Supply. Make sure you get the fine powder but not ultra fine. I have 44,000 pounds of it here but its not worth traveling distances to pick up copper. Right now copper is going up in price due to China and we anticipate all time highs this year. Try and find it for less than $1.50 per pound. Tractor Supply may be expensive but if you go to your local grain/feed store you may find it cheaper. Always buy it in the 50# bag. Never buy it in the containers as they charge 2-3 dollars per pound.