TB: these places do exist. why people don't shop them? not as convenient as popping into your local supermarket. also, you do need to buy more than at the supermarket and with limited freezer space, most families just don't have the room to buy this way. (but i'm sure you know this already as i've posted dozens of times about the places we've bought from.)
we use a frozen wholesaler in sai kung. we get excellent beef fillet, around 4lbs for about $300-ish? baby back ribs, tyson chicken breasts.... all of the meat we buy is imported.
don't think they deliver to tst though, sorry OP.