Hi,
All your prices are for the quantity "1" ; HikaShop will display the best price depending the Joomla user group of the current user.
The setting to display all prices is depending the quantity, not on the ACL.
Price display method : When you have several prices in the same currency for the same product, the system needs to decide what to display. That will be the case for prices based on the quantity. Show you will either be able to display the lowest of all the prices, or display the price for buying only one item, or the lowest and highest prices as a range of prices.
Regards,