I just ordered one from
Excelsa Gardens, Home of Unusual Tropical Plants, Landscape Plants, Heliconia, Gingers, landscapers. I believe it was a 3 gallon pot for about 9.50. It was a rather large wholesale order that I placed. Not sure if they retail or not, but it is worth a shot.
They also had 7 gal for $35 and 15 gal for $75