I provided coffee to my previous helper but the existing one prefers tea. They never ask me to buy for them. If the stocks run faster than normal, I'll not buy immidiately.
my ex-maid drank like 2- 3 bags per day.. while I bought that to 同工人SHARE!! ended up she finished the whole box of 2合一 in less than 2 weeks!! **noted she doesn't need to take care of my new born at night ...! and I told her many times to sleep earlier.. she said she was unable to sleep until 1am or so!! (of course!! she drank so many coffee during the day!!!)
since then, I only get her a box at the beginning of the month.. if she finishes earlier, she will buy by herself.
Luckily, my current maid only drink coffee once in awhile... the 2合一 still not finish even I bought it for 2 months already!