It’s also not priced at the cost of a “bespoke quality Rigby”.
It’s an amateur reworked gun that is a Merkel. Making any comparison to a Rigby is not a proper analogy. $20k+ puts you in a world of high grade London extractor guns, Birmingham ejector guns, and Heyms. If you’d like to make analogies, compare and contrast to those of a similar price point.