I strongly suggest that you make the purchase sooner than latter, because you never know when the item is going to either go out of production, or have "manufacturing" difficulties. A friend that is in the reproduction parts business told me about a couple of his suppliers that were in business last September, and have closed shop because of labor shortages as a result of Covid. In these uncertain times, it is better to hedge your bets on what is available today, than it is to hope that it is available next week.
I needed a new seat for my Kubota tractor, and there is none made for it in the aftermarket. The discontinued seat was $135, and the new superseded part is over $400, and requires a "mounting kit" to make it fit. I called around to a bunch of Kubota dealers and found one that had the old part number in stock.