USA source for Bonka batteries OTHER than 22000mAh

I can’t find another battery manufacturer that comes close to the price and energy density of the Bonka batteries. I need 6 of the 6s 13000 mAh batteries for my project (not an openPPG), but I can’t find the big Bonkas for sale anywhere else in the US. @Pdwhite any chance you can help out with this?