I found some local IBC totes in Ventura, 275 gallon, for $50. I'm going to buy one for rain water harvesting and another for the jabo. Just price wise, I think it makes most sense for me and I have an angle grinder to remove part of the cage and a portion of the top. I like square pots and I cannot lie.
AGRX, which another poster recommended, seemed really pissed I even asked for one haha. They said and I quote, "Absolutely not."