It's very difficult to sell these kinds of dot.info's for high prices. It happens, but not much, with generic-product-name.info's. And they're questionable names to develop into minisites... you have so much competition with large corporations who will dominate the search engines that as a minisite, even a good minisite, they might still always remain dozens of pages down the list when searched for, and get little traffic. When I do minisites with dot.info's I search for or buy names that have strong exact searches but very few competitors, so I can get my sites on/near page 1 of Google, that's the only thing that allows them to be profitable.
The 'problem' here, ha ha, is that your dot.info's for these generic products are actually too good, and in a strange way, that actually bites you in the arse
Speaking as a minisite developer, I wouldn't pay more than low - mid xx for each one at the most; I might strike it lucky and one will get a lot of traffic, but I wouldn't be willing to take the chance on them with investing any more $ than that.
So, to sum, end users will rarely buy these product-related kinds of dot.info's, and most minisite developers would not pay very much for them unless they were certain they could compete and get a lot of that traffic to them.
Hope this is accurate, somewhat clear, and that it helps
