This (together with resale value) is why I didn't buy my usual 2 cases this year.
It is a symptom of group case breaks, where if people hit, they get what they are after. There is no need to trade from case breaks and I found trading near on impossible last year.
Keep at it though as there are creative ways of doing it - three/four ways etc. Maybe, link the page to Facebook too. But yeah, the 'trading' of trading cards is a much more invested approach than just buying at rock bottom value like is the norm at the moment.