$600 would go further during a holiday sale. If you wait for a sale in the next couple weeks you could possibly get a 4K system for close to $600. What you posted isn't a bad option, it just seems like there is a sale every other week lately.

Like this one https://www.amazon.com/REOLINK-Security-Detection-Recording-RLK8-810B6/dp/B07W4WBKKJ/