I just meant that they are actively involved; they are certainly still teachers.
Regarding the pricing of online undergrad programs, I think schools have converged on a particular price level because it is adequate. The supply side of education is rather insular thanks to accreditation requirements (not a bad thing), but it means that there also isn't much incentive for competition on the price -- especially when the offering competes with your own core product.
The data so far indicates that the market for the OMS is disproportionately older and more fully employed than traditional resident MS students. Similarly, much of the core offering of traditional undergrad programs is focused on the 18-24 demographic, so I wouldn't be surprised to find that the online offerings appeal more to older and more fully employed undergrad students who can afford the higher tuition(perhaps with tuition assistance) in exchange for the increased schedule flexibility.