If you're unsure what price to sell Zcash or any other crypto asset at, here's a tip: it's very difficult to work with price targets in crypto. That's why you should always look at the project itself — how much room it still has to grow, how necessary it is for society today, and how necessary it could become in the future.
That's why zcash:native is still cheap today, whether it's at $850 or $10,000, because the roadmap is incredible and the direction our society is taking will only increase the demand for privacy.