It’s a scam if you ask me.
I’ve found one of forum topics about Mi Max 2 in their offer and was interester too at the beginning, but then I’ve googled a little adter coolibuying and what I’ve found wasn’t too promising.
Firstly, you can find exactly same post on few forums made by new users, posts work as typical clickbait for me:
https://www.android-hilfe.de/thema/letv-le-max-2-oder-xiaomi-mi-max-2.838718/
https://forums.androidcentral.com/buyers-guides/812533-xiaomi-mi-max-2-le-max-2-a.html
https://www.avforums.com/threads/xiaomi-mi-max-2-or-letv-le-max-2.2109432/
https://mybroadband.co.za/vb/showthread.php/898400-xiaomi-mi-max-2-or-Le-Max-2%EF%BC%9F
http://www.tomshardware.fr/forum/id-3049523/xiaomi-max-letv-max.html
http://www.androidpit.es/foro/748210/que-telefono-debo-comprar-xiaomi-mi-max-2-o-letv-le-max-2
http://www.chw.net/foro/noticias-empresas/1444686-xiaomi-mi-max-2-smartphone-4gb-64gb-199-99-envio-gratuito.html
http://foros.cristalab.com/xiaomi-mi-max-2-o-redmi-note-4-que-telefono-debo-comprar-t117566/
http://www.cyberforum.ru/mobile-phones/thread2014205.html
http://www.forum.hr/showthread.php?p=64482183
Secondly those two reviews on trustpilot made by new members
Thirdly the fact that coolibyuing.com was created on 24th of May this year, so it’s quite  a fresh site: http://www.gd-domains.com/20170524-all?page=98
Aaand forthly the banners you can find on the left side on their webpage they try to direct you to www.priceangels.cn …ant that pade isn’t too well reviewed on trustpilot.
So I skipped their shop and bought phone on aliexpress
btw. I made my account here just to warn you 🙂
