That's because they don't lie with the shipping date as others do.
Received yesterday some untracked stuff from an ebay's seller, 30 days from shipping date, usually 12-15 to my home, registered last 6-8 from 'left' notice.
I'm waiting my first two purchases from FP surprisingly shipped both in 24 hrs, the bad news this was almost 45 days ago, ha ha
Received some days ago in 'normal' timing a torch from the much hated here Neverbuy, a ZY-C84 Q5 which appear to hold the real stuff, much brighter than one bought before at half the current. After reading the comments here just ban that seller from my list.
As a side note I think most sellers are good enough before the first problem arise, doa, not received and such, the good ones are the ones who past that issue with decency.