I've asked Joe to edit muy first post, price of
grafton fretless banjo <£400 according to the website I looked at.

interesting vintage banjo with an inscription in German https://billsbanjos.com/German%20banjo.htm

not all old fretless banjos are Proffit style https://billsbanjos.com/Boucher.htm
See also https://jakewildwood.blogspot.com/2015/05/1890s2015-buckbee-made-wurlitzer.html

new gourd banjo https://www.ebay.co.uk/itm/Fretless-Gourd-Banjo-/254869045062

Too bad we don't have sound samples to go along with the photos but there are plenty of youtube videos of fretless banjos
https://www.youtube.com/watch?v=l77qr0mZRh4 (selected as banjo dages to 1890s)