Welcome to NamePros.
Something to consider is the fact automated appraisal sites such as estibot, etc; should really only be used as a tool or guide. They should not be used to base your decision to purchase or not to purchase domain names. Given the different metrics, most will have a different valuation amount to boot. However, Valuate happens to be powered by Estibot, which uses their format and therefore mirrors their appraisal amounts.
With regard to the name in question, though it may not be what you want to read here, quite honestly it would most certainly need development to recoup much, if any value. The amount of time and money to establish may not be worth the return over the proverbial long haul. In light of this, you may want to consider alternate sales forums, such as NP or eBay, for example. Or, perhaps contact the owners of the same or reverse of the name with alternate extensions, and offer it to them for a nominal fee, such as regfee or maybe low even $xx.
:imho:
-Regards