• From the bundle download page, open Chrome developer tools and paste this into the console.
• The output will be a list of shell commands to download the files.
• Swap EPUB for MOBI or PDF depending on the format you want.

Curl commands:

$x("//a[contains(., 'EPUB')]/attribute::href",document.body).map(function(a){return "curl -LO '"+a.value+"'";}).join(";\n")

Bare link list

$x("//a[contains(., 'EPUB')]/attribute::href",document.body).map(function(a){return a.value;}).join("\n")