How much is this subwoofer worth?


A few years ago my Dad was given a subwoofer which was then left with me. I’ve had it a couple of years and I’ve decided to sell it but I have no idea how much it is worth. If I’m correct I think it is a Rockford Fosgate t212d4 12” made in 2004
zederick
Check the "Sold" listings on HIfiShark.com. Click on the "Sold/Expired" tab and then on the "Site" label at the top of the listings to narrow down the results to specific geographic areas.
https://www.hifishark.com/search?q=Rockford+Fosgate+t212d4