Just as a general point of reference, vis a vis shipping, the costs are going up. Comparing a car being shipped vs a smaller item may not be a valid comparison, the person shipping likely has a contract with the company they ship through, something a dealer of toy trains can't do. Amazon and other big online retailers offer free shipping, when it certainly isn't free to them, but they have deals structured to allow them to make that affordable (there have been theories promoted that shippers are charging individual people and small businesses a lot more to make up for the discount prices Amazon gets for shipping; so far I don't think anyone has been able to prove that, though I can see where that comes from). It also doesn't hurt that shipping these days is not exactly a competitive business, you have two major shippers (leaving out USPS) , and concentration in the rail and trucking businesses have led to lessened competition as well.
I have seen gouging on shipping (Ebay is notorious for that, person has item at 'dirt cheap price'..then charges like 125 in shipping), but I suspect what you are seeing isn't gouging, it reflects what they are seeing. like with inflation in general, a lot of businesses for a while tried to eat cost increases, but they can't do that forever. Doesn't mean there isn't greed out there,I am pretty sure there is in more than a few cases, but for example the vendor that tacked on a container charge likely has been eating some of the cost increase and can't do it any more. The cost of containers soared like 1000% during the pandemic and I am not so sure they have come back down all that much for example.
BTW I am not defending or condoning anything, just saying that what you are seeing is not necessarily gouging, I would guess a lot of it may be costs finally being passed on.