I don't know if that holds for a pure type-in domain. According to that formula it's $42 (average of $3.50 X 12) for a domain that gets 200-400 targeted pure typeins/month. I'll offer $42 right now providing proof of the monthly typeins.
You're welcome. I have a few domains myself that are pure typeins. I wouldn't sell any that are getting 50+visits/month for less than a few hundred bucks regardless of revenue. Good luck.