Let 410 endorsement
Nothing a few $$$ would not fix
You speak in jest, of course?? Don't you??
Large volumes of cubic $$$$ ---- for an orphan, unless you buy three, one to fly, two for spares.
It doesn't matter how cheap they are, it will cost you in the long run.
And they are cheap in eastern Europe, could there be a message there somewhere.
Tootle pip!!