Buy a "used" FitnessPark-Gym-Subscription

I know Fitnesspark subscriptions are not offically transferable. However it's ridicoulous that you can not even try certain offerings (for instance eGym ) but must instantly buy an annual subscription for more than 1300 CHF

So, I wonder if it is in reality really a problem in real gym-life to buy a partly used subscription from somebody else?
Who has done this already and where could I find one on offer?