I don't hold any hope for the research tool believing that the equation it uses to calculate percentages is flawed, and will never deliver accurate information.
Admin do have a thread currently running here in the forum calling for ideas from members on how to improve the site, so make the most of it and post your concerns and ideas there to influence change.
I'm honestly stunned that most are not using it, lots are happy to wright that they are not happy, yet won't take the opportunity that Admin has created to voice ideas on improvement.
If members want to see some changes, as I do, then make your ideas known in the thread, if you don't speak up then you won't be able to blame Admin for not making changes.
As for Nitrosale, it would be interesting to hear from someone who has used them, perhaps make a posting at suppliersreviews.com, you may turn up some info there.
Being a true skeptic, it wouldn't surprise me if some prices quoted on the site are unit prices for volume purchases. At the end of the day any genuine wholesalers will only provide wholesale price for wholesale purchasing.
I would email them and inquire as to the companies authorisation to sell the licenced products, the current availability and the MOQ for prices they use to market their site before I was to make up my mind one way or the other.