I was very much into anime (Japanese animation) years ago and some people collected Japanese laser discs. It might be worth posting in some anime forums, like animenewsnetwork, and asking if anyone is interested in a mint laserdisc player.
Prices for these seem to be all over the map, from $300 to over $1,000. Personally, I think the ones asking over $1,000 are dreaming. It's a very small niche market with low demand so I would expect it to be difficult to sell. The $200 - $400 range mentioned above is more realistic, even given the mint condition. If you are in no particular hurry, you could try and get $750 on eBay and if you don't get any bites then drop the price accordingly.