To catch up with your competitors, i.e. Apparatus, etc - you need to be thinking about allowing customers to select their order multiple.
I.e. for a an item like a trigger spray... (You can order EACH or CASE-6)
Some customers want to order in Packs not individuals.
Just about all main ERP systems have all this data within the system which can be extracted out easily.
An example would be: https://www.adcockexpress.co.uk/Products/General-Cleaners/BA007-75
The customer can either select EACH or CARTON of 6.
Essential if you want your product to be leading against the other players in the market!