Any tips on finding large lots of wine? (In particular, young ports)

Is there really that much fat profit margins for middlemen in Porto trafficking?

It doesn’t seem like unobtainium Burgundy which might tolerate that.

I like Port, as well as most dessert wines, but I don’t find that there is as much difference in the good versus great in sweet wines for my tastes.

And my experience has been that cellaring the stuff doesn’t make that much economic sense - storage has a cost (whether in dollar terms or other life adjustments) and the wines are pretty easy to find years later negating the value of laying down ones own stock.