I don't know if this question belongs here or not but I wasn't sure where else to post it! I just wanted to know if vending is still considered profitable? Is it better to sell off the tokens individually on average? Outside of selling off old junk and living off my hoard, I am not very good at this 'money making' thing. :' )

nnnnnnot really, no. depending on where you vend, you have an okay chance of getting items that are technically worth more than the 2 wizard tokens they cost, but it's not really a reliable or substantial way to get things worth selling. i just stick to questing, personally.
I haven't actually vended since they changed the system on them back whenever that was because it's just not really worth it. Anymore the only time I do is if Major Drills asks and that's only when and if I do his quests which isn't often haha.

Yes, but not as good as it was. Back then, the rarity cap was higher so you could vend more rare and super rare items asked by Saggi. Now, it's more reliant on new items or if you could vend a Riptide, potion, or something desirable and exclusive to the machine in the long run.