Once the set is released, we may see a flurry of activity, but for now, things have been rather slow
Speaking of prices, to determine those, well be looking at TCGplayer
In the era of Sphinxs Revelation, many Esper or U/B Control lists would run Ashiok, and I basically always thought of it as an utter waste of time
Ari Zirulnik wrote an overview of everything Strixhaven that I'd encourage you to check out
However, Ash Zealot is also able to play excellent defense, which is highly relevant in many of the creature matchups
Since you generate a lot of tokens thanks to other permanents, the ability to give them prowess helps to make them into much bigger threats instead of just 1/1s