$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,

$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