This is disturbing to be honest. A free give away, if you get the seeds cool, if you don’t, oh well you as the receiver should be happy that you were even given the opportunity to get free seeds.
As for requiring signatures, had I known up front that you were requiring signatures I would have opted out. I like to keep a low profile as my small town everyone knows everything about everyone, signing for a package from Costa? Oh that will spread faster than wildfire around my town. The level of ignorance in the rumor mill around me locally will probably have something along the lines of “Oh that jelly got a package from Columbia I bet he’s ordering cocaine from the drug lords!!!!”
I may have exaggerated for emphasis but I was trying to make a point. A heads up before hand would have been nice, and also if you sent them out once you are not obligated to resend if they don’t make it. If people lie about not receiving free beans karma will take care of them soon enough anyways.
My rant for the day.