Where would be a good place to buy& sell used audio equipment?


I have a B&W PV1 sub that went out on me (obvious inherent problem) but someone might be interested in parts, any suggestions on where to post used audio equipment for sale
mavs
i would try all the options above .since it's not working it will be a very hard sale so id'e ask like 100$-200$ plus shipping cost .sounds funny but it won't waste your time and energy that much .make it a no brainer for the b&w fans. i have two pairs of b&w speakers one is british made from the 90's and still sounds amazing, i picked it for 300$ used from a store.
I used eBay to sell a pair of JBL L110's - you just state in your listing that it is for pickup, no delivery, and cash when picked up. That way you dont have to deal with PayPal fees but you do get the exposure of ebays reach.
Try FaceBook Marketplace for local sale. I used to use Craigslist a lot with some success. Marketplace seems to be what everyone is using these days and I have sold things much quicker. 
One thing if you dont have facebook they wont give you marketplace right away till you use facebook a while "puke". So i gave up and just post on my wife's account.