I have a hunch my €1 lessor got busted. Glad I still have the plane (which was not bound for me

) though!
In all seriousness, the lease function unfortunately enables people to multi-account while being hard to detect, and doing private leases for €0 - basically giving themselves free aircraft. This is a similar, if not worse problem in comparison with half-priced *bleep* in the "blue" game.
As for the official brokers, past record show them keeping a small airline network (probably to offset the cost of scrapped planes) while giving people very reasonable lease rates. I'd say give them a chance.