Hi all! I'm new here, just looking for some guidance on selling some speakers.

I have 4 Marantz HD 880 floor standing speakers. I am trying to sell a pair or maybe all 4. I have no idea what they are worth or what i should be selling them for. All speakers work and have minor cosmetic flaws and are missing the covers. Someone let me know a good place to try to sell these and how much i should be asking for them.