The gameplay to price ratio is obviously going to be difficult on a Cactus Canyon. If a Cactus Canyon sells for $12,000, is the gameplay three or four times as good as titles that sell for $4,000 or $3,000? I think not.
The value of Cactus Canyon has more to do with its rarity than its gameplay; having said that if it was a real boring title then rarity would certainly not guarantee a high price. There are rarer machines which command much lower prices.
Is it a good fun game? I think so; I have enjoyed it every time I have played one. Would I spend $12k for the gameplay? No way!