I found a white Brompton on Craigslist locally. Sent an email to see if it’s still available. It’s white and single speed for $1000.
The seller didn’t give any details about which type or it’s age. I wonder if it’s worth the trouble to upgrade to 6 speeds. I’ve already been told by the LBS, that changing from a type M to H can cost around $500.
So I’m keeping an eye out for a used Brompton. Don’t see very many...