What's the best place to sell a barely-used RTX PRO 6000 Blackwell Max-Q (96GB)?

Bought an RTX PRO 6000 Blackwell Max-Q for local inference, but honestly it’s massive overkill for what I actually need. Turns out I just want a big model loaded that I can occasionally ping for thoughts — speed doesn’t matter to me. No training, no heavy coding workloads (I’ve got other tools for that). Basically just want a slow, smart, always-on private assistant.

Card has barely been powered on. Looking to sell it and probably grab a Strix Halo mini PC instead (EVO-X2 or similar) since unified memory + low power draw fits my actual use case way better than a 300W GPU sitting mostly idle.

Where do you guys recommend selling something like this? r/hardwareswap, eBay, somewhere more niche for pro/workstation cards? Any tips on realistic pricing for a basically-unused unit, or things buyers in this space look for (invoice, warranty transfer, etc.) would help a lot too.

EDIT: I live in Belgium
EDIT 2: I bought it for like 9500 eur so I don't want to lose much of money...

EDIT 3: You guys are crazy 😭 thank you for all the help. I think imma put it on r/hardwareswap for my own safety, otherwise I'm pretty paranoid. If you guys want I'll create a new post or edit this one when I posted it on r/hardwareswap . Thanks for all the support! ❤️