We have considered putting a 60 count, 90 count and even 180 count into one bottle. This, however, would not have such an big influence on the pricing, as the cost is mainly determined by the product itself.
Another factor to take into consideration: We make use of Fulfillment by Amazon (FBA) to handle all our customer deliveries on our behalf. These products are sent directly pre-packed from the manufacturing warehouse to FBA's warehouses all over the United States. This means that we need to purchase more stock over various product lines.
Our in-depth market research has indicated that the 30 day supply is much more within the budget of the greatest portion of the customers ordering Probiotic 50 Advanced. Furthermore, when using Amazon Prime Shipping, shipping is free.
If you have any further concerns, please reach out to our Help Desk at firstname.lastname@example.org or locate the support button on our official website and we will do our best to get back to you as soon as possible.