Justin/Toys....
.... that is basically what we in the Bankbusters group do
The sellers don't tend to hijack other seller accounts, so much as 'buy' them...... there is good money to be had from selling your eBay (or Gumtree etc) account to scammers. As long as your account is over a certain age, with recent feedback (preferably as a seller), then they will pay cash for it.... and then use it to scam others.
As you say, there are always clues in the listing(s)...
(1) far too cheap for what is being offered (as stated, usually cars, machine plant, motorhomes, motcycles etc - but sometimes other stuff as well - gaming consoles are quite popular recently)
(2) always a means to make contact (text, email etc) in the body of the listing
(3) sometimes even a link to a company website (usually for diggers/plant sales)
(4) an offer to deliver
(5) over 'reasurance' that you will get your money back if not happy etc etc.
We get into a conversation with the scammer (throw-away moibile texts / disposable email accounts etc) until we get answers to normal questions "Can I see it?" "Where is it?" etc and eventually get a name (usually a generic female - "Amy" was quite popular for a few years), and a bank account for transfer.
That is usually the end of the conversation with them - unless you want to carry on and wind them up - but that can be counter-productive.
There is a guy called "Jack Buster" (or Buster Jack - depending on which account he uses at the time) who collates all the bank details - if the one you get is already known, and he has notified the bank (only applies to UK accounts!), then the bank is liable for any money transferred into the account since they were told about it - but it takes a few more hoops to jump through before they will refund money - they are the biggest scammers in the scheme! If it is a 'new' account, then it gets added to the database, but any money already gone is probably gone for good

..... but I get £50 for every new one I find

.
We rely on 'Money laundering' legislation, and it works.
The ringleaders of the scammers are all Romanian, and the 'top dog' has had a $2M bounty put on his head by the FBI & Russian authorities.... still unknown where he is, but I'd love to find him so I can get a nice car
As some on here know, I used to do this for a living - so all my transactions are recorded to an 'evidential standard' - but they don't have to be.
The guy who started it (who isn't really called 'Jack') is a wealthy man who once got scammed for many 100's of 1000's of £££ - and now does this to get justice for victims (and rarely turns any profit, but ocassionally someone says "thank you").
I have met him in person, and know who he really is, and you'd be surprised ('cos you've probably heard of him).... but I won't tell you any details, even over a quiet beer. (it can't work that way, or it'd all fold, sorry!).
Anyway, Justin, there is an easy way to get scam listings removed from eBay - but you don't need to do it - 'cos as soon as I become aware, I do it

.....
.....usually there are multiple listings from the same seller, and if 3 or more get reported as scam, they all get pulled by Ebay.
I have to say that between Ebay, Banks, FCA it is hard to decide who is the biggest fraudster..... none of them are overly forthcoming with information, and all seem to be in it for the £££.
I assume (hope?) that there are similar schemes/groups in other countries, but don't know about them.