Is the safari zone paid random items

I’ve been working on and off on an RPG, and like most RPGs, you can fight enemies and receive random loot when you defeat them.

I’ve been thinking about monetization and have thought of an area that you pay to access where you can fight exclusive enemies which drop rare (but still random) loot. To my understanding, if it’s a one-time gamepass, this is 100% fine.

But one-time purchases will eventually be bought by everyone who wants them, so I’ve been thinking about alternatives in the form of either a VIP subscription to continue having access, or an entry fee every time you want to access this area. So, it would basically be more like Pokemon’s Safari Zone. Would either of those make it a form of paid random items? (I’m leaning towards “no” on the former and “yes” on the latter, but I want to know for sure)