If Hitler sold great soap would you be OK with buying that soap and saying yeah I know he's not a great guy but I love the soap so therefore I will buy it.
An extreme example to be sure but it helps me illustrate the fact that everyone's character plays into everything we do at all times even into the future. I have not had any dealings with this Dietrich but have no reason to doubt Raoul's statements and therefore would really hesitate to give him a deposit for any product.
Dietrich should do the right thing and settle up with these individuals or suffer consequences in the form of reduced business as a result of those shady practices.
Furthermore I would never purchase a 10K cartridge as I would find it an insult to my intelligence.
And yes the screws should come with it.