The system store had a lot of items, making it impossible for Michael to be able to go through all of them. That was why he had to apply the filters every time that he wanted something.
Even though the items in the system store had been categorized in different categories, the number of items was still high. This was also in consideration to the fact that the cheapest item in the system store was priced at $1,000 in the real world currency.
Anyway, just a few seconds later, Michael found what he was looking for.
Surprisingly or unsurprisingly, the system store also had mutation serums. It was just that, according to the description provided, there was a difference between the serums here and the ones described by Brian.
The serums that could be found within the system store had the same categorization, starting from grade E, all the way to grade SSS.
