That is good to know since my options were “Buy a second hand iphone for cheap then spend $500 on software” or “Use any cam I got and spend $1500 on software”. Good to know the price has come down for indies… too bad I now have the iPhone 
For those really on a budget, though, any iPhone X or later can do facial mocap with the free facial mocap app Epic has on the App Store so just buy a $300 iPhone like I did and Bob’s your uncle!