A:Answer I would expect opportunities to purchase will be somewhat limited for the remainder of the year. Xbox has yet to present an actual timeline other than soon, but given current demands (again working with limited information) any immediate resupplies will likely be limited. If you really can't afford to wait until 2021, I heard that the last big sale this year will take place on black Friday, with retailers like Gamestop claiming they will have at least two units per store.
https://www.gamespot.com/articles/ps5-and-xbox-series-x-will-be-back-in-stock-at-gamestop-stores-on-black-friday/1100-6484207/