there was a good video on youtube comparing the sustainability of coco coir vs peat... it seems that in certain places of the world peat is not sustainable, however it is believed that in Canada which is the home of more fresh water lakes than the rest of the world combined, that peat may be sustainable... Not trying to start an argument.. this is just what i heard in the article. Anyhow, I do have a tractor supply and in a couple of months a rural king opening near me. There is also an Agway store which is a farm supply store. I could try those stores to see if they have anything cheap or interesting. I don't mind ordering some amendments like bio live, oyster shell, kelp meal, recharge whatever through amazon. but simple things like potting soil or the base for the potting soil would be awesome to be able to buy locally. I just had 60lbs of earthworm castings delivered to my house but it is a different brand than i found at home depot, so for this little experiment I decided to buy one small bag from home depot. seriously though, can you have too many worm castings? i kinda doubt it.