A quick search on the supplier page I happen to have open right now puts the cheapest Micro B connector in stock at around $0.20 and the cheapest C at around $0.40 (both at factory MoQ). So the price difference still appears to be around x2.
A few years ago when I was working on a project, the factor was in low two digits. It was a no-brainer to choose micro B over C.
A few years ago when I was working on a project, the factor was in low two digits. It was a no-brainer to choose micro B over C.