Newbie question, 1983 halo seats

I have a set that I want to sell.
They are in excellent condition. Headrests are perfect.
Upholstery and foam are new.
Logo is from a defunct shop that built the car, I think that it can be removed with a tailors seam ripper.
Could anyone please advise me on the best way to sell them ?
Ebay comes to mind, but it would be a hassle to ship them.
Bigger problem is that I have no idea what they are worth?
Any advice would be greatly appreciated.
Thank you !
 

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