The public comps are not encouraging. Namebio shows a grand total of one dot net sale containing the word mining: web-datamining.net, 331 USD, Namejet 2008. That was a head scratcher and 8 years later it's still registered with the dot com available. That's tenacity. Up on the dot net mountain top, asteroid.net reportedly raised 2600 USD on Namejet last year. Keyword count greater than one is the kiss of death for all but dot com. Bonus points for expiration date May 2018. Good luck!
wholesale: X USD
retail: low XXXX USD