We're mostly on Feathermoon/Scarlet Crusade btw, I'm not sure if that's where you were before or not!
I've been paying my sub through making gold and buying tokens since late WoD when tokens came out, and I can still do that even with the increased prices. It's mostly buying mats at low prices and then crafting items and selling them, I spend maybe 10mins doing that every day while I have my coffee in the morning. I use a couple of addons to make the AH tolerable to use but nothing heavy like TSM or Auctionator.
I only really do it because I can though, once I got into the habit of using the AH like I am it just became my morning routine. I'm not sure I'd say 90k gold a month is "worth" it but you could do every other month with cash instead too.
Here's a site for token prices https://wowtoken.info/
, and a token adds $15 to your BNet account balance.