What does weathering do to the value of models?

[ntpntpntp]

Drop the ensign and go full on colonel mustard.

Hehe - I always read it as "Ensign Expendable"  after a song my band wrote in the 90s about the Star Trek red-shirts who often failed to return from missions

[woodbury22uk]

I generally do not weather stock but I have over the years weathered the odd wagon using gouache colours which are entirely water washable. A warm water wash and a baby's toothbrush for any stubborn bits in corners will return the wagon to original condition.

[Greygreaser]

Everything in stock is 'as manufactured' pristine or as bought/weathered and at some point I might weather some new bits with 'sticky powders' but its low on the priority list. don't mind picking up 'bargains' that are weathered if all the bits are ok and working.