Aside from exchanges, is there a place where people list private token sales.
I am looking to acquire tokens that have little to no volume and have fallen 95-98% since ICO.
You can only get such tokens with high amount from the exchange, I don't think any single individual will have the volume that you are looking for except from a team member of a project, and I suppose there is no point asking why you have interest in such project with - 98% drop because you won't share that information! Anyways, your best bet is use an exchange.