specpro
Established
Found one for second hand for about USD 1000 minty condition. Is it worth it?
pre-asp is worth $800 (USD) tops for a "minty" copy. I wouldn't pay more than $750.
EDIT: http://www.antiquecameras.net/leicamlenses.html
I'm not sure that prices at the site you post are acurate - well, at least not for all lenses - some seem to be higher in real life nowdays.
Adjust for inflation and you will probably be less pleased? 🙁