There's a guy on Ebay from the San Jose, CA area selling big pots. I got a few very large trays and pots from him for a fair price. Good luck!
If it's
this seller...you're going to need good luck. They do have decent pots at a decent price, but the first time I bought a 21" pot from them ('08?), it arrived broken, it was replaced with another broken pot. They were friendly as anything, but tried to skimp on packing and it cost both of us.
I gave them another try this spring and bought a blue glazed pot. The shape was right, but arrived a very different color. For the price, I didn't complain, and chalked it up to lighting/photo quality, but did end up giving it away to a new club member.
The straw that broke the camel's back was when I took one more shot and bought an oval pot that had a burnished look, with a lighter middle band; and darker top and bottom (top photo). What arrived was a plain brown pot (bottom photo). The seller admitted to "running out of the pot in the photo and sending this one instead." Again, nice as anything, but if I buy from them again, it will be for shape and size alone. For the money, they're inexpensive, but not at all consistent.