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In my hunt for one more of the discontinued batteries I found that Costco has a special going for members for $650 while supplies last. Offer ends 11/17/19.
Thanks again Bob142 for the heads up on these - I was considering a DIY setup but the sale price on these brought them down to at or below a DIY price. They appear to be well built with a solid BMS and warranty from a US company. I'm not concerned with the 90 vs 100ah issue and how they were marketed. I'm more concerned with parts and build quality. I grabbed 4 of them for my projectLooks like these batteries are now out of stock at Costco. Congrats to all who grabbed the deal and good luck with your projects.