The Unity Asset store is taking their time updating from the early-bird launch price to the regular pricing; they’re also a bit slow posting updates so we’re ok with while they’ve still sending out version 1.0 to customers.
For Unity - there’s an initial product, , at $250. There will be bug fixes, but not major updates. Any major updates for Unity will be a separate product, e.g. 2.
For UE4, we’re going with a subscription model, with continuous updates - so you’ll always have something that tracks our latest -set.