I just started looking again recently. I used to be very good at finding bargains, but I am not a flipper. I have only ever sold four cues.
Ebay, Goodwill, Buya, Offer Up, are all still good. You just have to know how to search and be ready to move.
You also have to be willing to take some risk. Poor descriptions from people that don't know what they are doing, fuzzy pictures that don't show everything you want them to, and most importantly inaccurate listings.
Sure, we see lots of people listing cues for way more than they are worth. But I guess you haven't seen the one's that have no idea what they have and sell a cue in an ad that misrepresents the cue. Wrong spelling, misidentifications, etc.
I got a cue on Goodwill that wasn't even listed with the pool cues. Probably nobody else that would want it ever saw it.
Running searches for common misspellings and misslistings can open up a whole new world.
Joss? Juss or Josh. Just an example. Pool cues listed as billiard ques, and all kind of aberrant spellings.
I will not give all my secrets. If you are going to buy from people that know what they have, and know how to list it, with the pictures and details buyers need, you are barking up the wrong tree if you are looking for bargains.
I have been going through five years of posts here that I missed and I saw more than one cue identified as an "Asian import" POS that was not.
I just landed a Fellini for $100. So, I'm happy.
I also like buying from AZB members occasionally. Fair, straightforward, no problems, but I often know who they are.
I went back through my PMs, five years of them. I was amazed at how many people offered me cues and cases for bargain prices, just for being here, and I was gone.