I found a dealer that is giving me Mazuri 6F (50 lbs.) for $23.50 a bag. Sales tax brings it up to $25.15 compared to Native Earth at $31.86.
Mazuri quality is better. I was getting 1-3 pounds of dust in the 40 lb. bags of NE, something I don't see in the Mazuri bags.
I would love to get Kent for $14-$18 for 50 lbs. but it's just not available anywhere near me.
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I'll mention this for anyone that cares to follow through and maybe make some money. I found local mills that would duplicate any existing food and bag it. They have a 500 lb. minimum and you would need to find a mill that has a die to create the block form but it can be done. You could become the manufacturer and sell locally. Cost was minimal and there was room to make a profit. Good luck.