I know you posted this a year or so ago but are you refering to this one:
<p>SNK Neo Geo Neo 29 Candy cabinet arcade 4 slot MVS. </p><br /><p>Fully working Japanese candy cabinet </p><br /><p>Message me before buying </p><br /><br /><p>Fully working , 4 slot included but no games . </p><br /><p>Cash offer , in person pick up </p><br /><br /><p>Original monitor ...
www.ebay.com
The seller of the one above is a nonce as he does not even know what he is selling. Thats a Neo 29....not a 25. You can tell because the 29 has that retarted looking marquee header that they used on the 25, a cost cutting move by snk. Oh, and also because it says "Neo 29" right on the side of the fucking machine.....so no eagle eye shit needed really.
To help answer your Q & give you a better perspective I have an acquaintance who bought a Neo 25 via winning an auction probably a year or so before you posted this. The auctuion was due to an arcade going out due to covid I believe so it was well known & allowed bidding nation, if not world, wide. The example was in near mint condition & bidding ended up closing at $2,500.
Condition matter with these cabs so I would say on a low you are looking at about $1,500 to $2,000 and a median of $2,500 or so while a high if $3k to $3,000+ is not completely out of the question if it is a cherry example.
Hope that helps.