The page tells you to follow the label directions but does not state a serving.
The serving size and servings per container are on the Supplement Facts panel on the bottle. We have not seen the panel and cannot tell you the number.
Without it you cannot check the supply labels or work out your real cost per day.
Ask the seller for an image of the panel before ordering. When the bottle arrives, follow the label and do not take extra. Count the gummies and divide by the daily serving for your own run-out date.