Any purchases made now will be refunded in the update. The sale is there because after the update, the EULA takes effect, and ranks, crates, and other buyable purchases will be removed from the store, and thus it is recommended you purchase now, as you won't be able to receive them later. Take note that the EULA only will be effecting IR as of now, and most likely as the other gamemodes receive updates, they will be converted as well.
When you say refunded, wouldn't that technically be a charge-back which I believe in the case of BuyCraft is an automatic ban? Someone else told me that purchases made now would be received after wipe/update whenever that is. If I buy stuff now will I get to keep any purchased ranks, crates, and enderchest items when the update happens? Sorry for continuing this thread but it's still a bit sketchy.
Whatever you purchase now you will KEEP. After the sale it will be taken off the store, unavailable to be bought ever again, but you will still have it.
Plus why wouldn’t you buy now there’s a hecking sale. If had ideas of purchasing something, do it before you can’t.