$399 for 100AH that appears to have decent quality.
It might be close to twice what an AGM cost but if you consider depth of discharge and Peukert's law it is almost twice the battery.
At $4 and AH that is way cheaper than $7.50 an AH for the last battery I bought.
These don't have bluetooth or temperature protection but that isn't something you cannot do without.
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2013 Winnebago Journey 36M DP. Full time since 2015. 1987 FJ60 Flat Towed,
FAILING 2000W of GRAPE Solar, 800AH
LifeBlue LiFePO4 batteries (excellent), SMI Toad Brakes.