Yews I think that is a bit "Steep" for a 6 Volt Wet Cell since Sam's sells a diferent brand for under 100, costco is about 100.
However that said (I have DEKA's by the way) DEKA is East Penn Battery company.
There is ONE lead smelter in the US. East Penn Battery Company.
The battery is 100% USA no foreign content. THUS I support it. They are good batteries got mine in 2014 and .. So far have not even added distilled water ()need to check them however,,, but every time I've checked they were still good)
I will admit I have expanded my battery bank but NOT my converter so they do nto charge as fast as the Interestates that they replaced No complaints about the interestates (Johnson controls in my case) eiter.
Interstate is one of two manufacturers,, Johnson and another company depending on which side of the USA you are on, both good manufactures. MOST "Store brand" batteries are either Johnson, US Battery or Excide.. I've never been all that pleased with Excide in cars.
Somewhere in one of the forums is a list of who makes what.