First thing I look is would I hand register the domain, Maybe but there is a lot of better stuff expiring , I would list this at godaddy ,anyone in that field thats looking for a domain ,should get a promt saying your domain is a premium for sale ,being the somewhat Strong keyword, they may say ill take it for 300-500 . Other than that you can put a million things before backup and a lot will be better or on par with your domain.keyword is searched and companies use variation on the term or exact. You can email thousands of end users through a service like estib ,I would not do it individually because of time. All in all id say end-user 300-600 wholesale 20-50