all depends on hat and effect...by example: high tier hats with high tier effects..for example epic burning overpriced team captain won't be sold cheaper because it was duped...and well..most people won't sell their hats alot cheaper because they were duped. Gifted hats are an other story..i don't realy know about them
 
all depends on hat and effect...by example: high tier hats with high tier effects..for example epic burning overpriced team captain won't be sold cheaper because it was duped...and well..most people won't sell their hats alot cheaper because they were duped. Gifted hats are an other story..i don't realy know about them

And if we use an example of An unusual that's gifted and duped at the same time with a bubbling effect On a hat such a bombing run
 
Some people consider gifted unusuals cancer, but others dont care about it. It drops the price not by much though