What made you think the Ethereum PoW coin will be sold massively ?
If Ethereum is better than Ethereum Classic, Ethereum PoW should be better than Ethereum Classic in technical. I think that fork will not have lower price than ETC. For developments in future, I don't know because the core team of Ethereum led by Vitalik will focus on the PoS coin.
Because it will be a crappy coin)) We all know the reasons for the possible appearance of ETH PoW, but this coin will not have the support that Ethereum has. And despite my attitude to the new coin, I also expect to get it for the sole purpose of selling it immediately and getting a profit. And I think that its initial price will be higher than the price of ETC, but after the initial pump, the price will drop lower than ETC.