The price will get pushed up like other hardware launches if in limited numbers so if its expensive, expect it to get more so.
Intresting about AMD users not wanting to upgrade to ADL was the same situation with anyone on a Intel Mid to high end K cpu as the average game performance at 1080p was around 10fps better on the Hardware Unboxed review so no point in changing to AMD as at the time motherboards where expensive also.
Have to hand it to AMD though giving people great pricing on CPU's (3600 to name one) to lock them into their eco system just to jack to pricing up the next generation to make up the difference and attempt to ditch support for them on older motherboards must have made Intel proud.