I have spoken to seller earlier today, and he got the crated up dishes as part of inventory of a building he needed to clear out.
Both crates have been sitting outside for a couple of weeks after they vacated the building.
This is why the cardboard looks soaked, but he says that there should be no rust, but he wasn't able check as he didn't want to unpack that crates further.
As far as he could assess there are NO mounts, pedestals, king-posts or anthing like that - just the reflectors + feedholders.
And the number of boxes and the (lack of) weight also indicates that there are no mounts included.
If I can find proper transportation, I am strongly considering the 3.8 meter.
If I go there by car (3000km trip), I might opt for the 5 meter as well as it fits in the trailer. If I get it shipped I may stick with the 3.8.
He also mentioned that there had been quite an interest in the antennas... we shall have to see what happens once we get closer to deadline.