dill +1
Good for you hilde, you moved the gear quickly, and can claim some vindication regards those who hammered you a bit on the initial price.
I've never made money selling gear, and never tried, but it's hard to see how this could be morally objectionable, if there is no misrepresentation:
Suppose I buy a pristine [your favorite big $ piece here] for 10% of retail at an estate sale; I've not harmed anyone by re-selling it for 11% of retail -- on the contrary, looks like I've helped them.
I do find the people who set out to make money whenever they swap out gear a bit odd -- again, not my MO for my hobby -- but if they play by the rules, what's the beef?