I was checking the other extentions and not developed, so it seems to me that have not much sense to build a site to just say the gold value
What I guess is the name is taken in several extentions due the domainers speculation with the keywords but a thing that has not much sense in the practice when it comes to build a site. So if you want an enduser I see it a bit hard to find one for a decent amount
So beeing a .net I'd say $10 - $50 range for someone who thinks, is convinced of, etc that it worth the buy for resell or a development
Or you could opt for siting with it for an indeterminate amount of time to see if you make a good sell some day which wouldn't be 100% sure that will happen
Just my opinion, and I hope you receive more opinions, good luck