how long would a 10ml bottle last if once a day i used 1 drop? we talking weeks or month or months?
you can check out this thread for more info How long does A314 last (10ml) 
to search for info click on the search feature on the user bar at the top and type what you looking for…there is tons of info there…you just sometimes have to look for it
We are talking about anywhere from 3 days to 5 days Haha of course im kidding
Well there should be about 300 drops, so it can last u almost a year. You are talking about a314 right?
At 1 drop per day without any off time, 10ml will last approx 260 +/- days.
(unless my math is off)
*“A314 comes in a light oil base with a minor blend of real essential oils, which allows it to last all day. The 10ml bottle lasts up to a half year at the recommended 2 drops per day, when you take two days off per week.”
*From the Androtics Direct/SmartMones A314 page.
But if you do 69.95/0.17 it would gave you like 400 drops (0.17$ per drop i assume, since if it was 0.17 per 2 drops, there would be 800…)
And here for 10ml you will get 384 drops
I know some talks about taa oil and dirty, but if someone is brave enough to keep a count, it would be great
results may vary? 
The product in question is Alpha-7.
jeeze i was hoping for 3 months with 1 dab a day. thats good news.
Drops can vary in size from .05 to .1 mL. Most of the pipettes I have used seem to have drops that are about .05 mL, as are some dripper bottle tops, but other bottles may have slightly larger drops.