I dun think hes flaming you, the age look of the jeans is
confirm got washed before one. crumpled until like that, if you
want to insist its new, i think you better go photoshop or
something.
although saying its from salv army is a
little too overboard... but it does not look very new either.
2nd handed good, price all auto cut to 50-60% one, if only 20-30%
discount i am sure even you will also go and buy a brand new one
right? , plus clothes even harder to sell, hygiene issues comes in
too.
I also saw this jeans selling at 60-70 plus at queensway here. i
think level 2 here got a shop selling. 50% of orginal price will be
a reasonable price for 2nd hand clothes. If you truely want to
sell, then Pm me bah. thats all 
PS: guys dun need to flame him too hard lah, its looks old, but not
to the extand its from salv army