Centaur is an excellent machine. Theme is a bit dark for kids (that's why I don't have one in the collection currently). Sits in well with Xenon, Eight Ball Deluxe, Fathom, Medusa and Viking. Years ago, one sold for $5000 on eBay - I actually went to see the game. Straight after this, every dealers that had one in stock, no matter how trashed, listed them at $5000 ! I watched this title for years and a really nice one slipped through my fingers for $1800. Worth $2000 in today's market. Slipped from $2500 - $3200 18 months ago.
Great player that seldom changes hands, but pinheads know their value, so they expect good money on resale.
Typically, they have a lot of wear around the top ball arch area. This is the first place I look - and the boards must be working for this game - especially the Squark and Talk board.