Given I’ve now owned 7 I will take a shot at this on the ones I have experience with
Merkle $12,500 new, $8-$10,000 used
Kriegoff $20,000 new, $15-$17,000 used
Chapuis $14,500 new, $9-$12,000 used
Rigby CA no new, $20-$25,000 used
Rigby London two different models. lower priced new model...