It's virtually impossible to appraise a domain that makes no sense but *could* be used for X,Y or Z. There is nothing to appraise it on. If it has no earnings, no traffic, no clear route to monetisation (eg nothing you can sell to someone even if developed), and makes no sense as a phrase by itself then the answer has to be $0. That doesn't mean that nobody will want it - just that it will be an unappraisable 'lottery type' sale.