The 70-200 f/4 seems fantastic at $1300 and not bad at $1600. Definitely not unexpected for current Canon pricing. That's $0 to $300 more than the EF version, and an upgrade delta of ~$1100 to the 2.8 version which is an even wider gap than the EF f4 vs f2.8 comparison. The EF versions right now are $1300 and $2000 (sale), and a comparable savings for the RF f4 would put it in the $1700-1800 range.
The 50mm is too much. I suppose I'll still pick one up at some point...but it's a huge jump. I was really hoping for $160, and $150 if we got lucky.
Given that EF adapters are cheap/almost free with a body on sale, and you can find the EF version for $100, I wouldn't use that as a price comparison. It's a wash, but at the small size, you really will notice not having the adapter in the way.