Perhaps a requirement left unsaid by OP, but something reasonably priced. $2500 is a bit rich for what it would be used for.
$2500 isn't too far off of the BOM for epaper this large, plus some markup for the assembler. Even if you bought this as a bare panel and a battery on Alibaba, you're not going to do better than $1500 or so. At current date that's just what it costs
it's just absurdly priced though when you compare with a 80"+ tv, I get it, its different lower volume tech, but chicken and egg.
Indeed. This is the issue with these panels. They tend to be prohibitively expensive. Worth for signage because labour costs will dominate in the long run. I suspect this is what dictates the panel prices.