Well money wise, if you only asked for what it costs to make and send it, that would technically be like giving them away still. There may be no precedent set, you'd have to ask yourself if anyone would do anything that bad over such a thing. Typically though, if you make sure you don't do it for profit, that would be a good argument to make. That much likely has been ruled on already, that you could give them away as gifts, just not try to sell for profit.
So say it costs 37.00 to make and ship an item, its probably been decided that if you ask for that, or within a small margin, its reasonable. Asking for 40.00 is probably accepted margin. Meaning its not likely you'd ever be sued, they'd be guaranteed to lose money doing do. And all of this is again only because they don't actively make anything for Freelancer anymore. None of that would apply though if Microsoft was still selling models like this currently, or marketing Freelancer at all. I'm no lawyer, but it might be worth a look. At the very least you could probably give the patterns away for game credits to those who can print it themselves.