FYI, as long as you don't have one already, you get your first freighter for free.

After a reasonable amount of playtime, money is plentiful enough that those prices are an 'every Tuesday' kind of thing more than actually unattainable. After completing the main campaign and spending a bunch of time screwing around, at this point I have to store wealth as high-value items in storage, because selling a couple stacks will easily hit the wallet cap and selling more is a waste.