I ordered these batteries on 27th December, they were shipped same day, and I received them on January 16, well within the 10-20 business days estimated, so well done, MITB! I also got them in MITB's pre-New Year sale for only €3.85, which was excellent value for two 4000mA batteries - including delivery!
It's exactly as described on the MITB web page; two 4000mA batteries. Not much more can be said.
(Ignore the charger in my picture; I bought that separately)
Great product, unbelievably good price, free delivery! Thanks, MITB!