This would be an awesome way to give players occasional opportunities to rotate their skins without spending the extra cash and stockpiling skins for the same weapon. It also fits well with the night (/black) market theme!

Surely Riot has more data than I do here, but I can imagine this being a win-win for them as well, particularly as the pool of skins continues to grow. This ends up acting similarly to the steam market where volvo takes a cut of each transaction between players, and I think would incentivize players to get more skins (*spend more) in the long-term. At least for me, there's definitely a bit of psychological barrier when considering buying a second weapon skin, as it feels wasteful. Having the simultaneous option to buy the skin at a discounted rate also would make me feel better about selling at a loss.

I vaguely recall an interview with a Riot dev where they mentioned eventually providing some way to sell back skins, maybe they already had the intention of eventually doing this? The night market definitely feels incomplete and smells of agile development 😝