I don't care for this one too much and as always never use an appraisal from domain index or estibot for anything - since it doesn't mean anything.
The quality of the phrase "we buy domains" is totally different from "Buy Domains" which has a call to action to buy domains. This suggests that they are in the business of buying domains from people (like companies that buy gold, jewelry, etc). That really isn't the focus that a domainer wants to have (sure they do buy domains but their branding is more on selling). Also, domainers don't pay a lot for domainers and tend to pay even less for new gTLDs - especially of this quality.
I don't see it more than the following:
reseller = regfee - mid $xx
enduser (which is basically a motivated reseller in this case) = mid $xx to low $xxx
I suspect this will be hard to find a buyer outside of doing a cheap auction or something.
Hope this helps!