I bought a Series X from a scalper today..... Q

[Pemalite]

You are just feeding the scalper problem by giving them cash to keep them profiting to do what they do... That in turn feeds them scarcity problem, which then forces people to pay exorbitant prices from scalpers.
It's a circular issue. In short... Don't buy from scalpers, then scalpers don't have a market, then we get lower prices and more availability.

I would personally sell the Xbox Series S unless you have use for it in another room... Maybe put it in dev mode and use it as an emulation box?

I for one got a launch console on launch day, so didn't have to pay a scalper. Thankfully.
Yet to play a Series X game on it yet though, but spent most of today replaying Dragon Age: Origins, so that happened.