When I clicked the link thew prices were equal. Still, why not get Blu if it's the same price as the DVD...
I have seen it before myself though, that Blu was actually cheaper. It's not yet common place, but we are getting there.
It's just sad that we still need to guide the Dicstibutors that much. We want faithful transfers and at least some Special Features to make use of the capacity. Too many sub-standard transfers and too many vanilla Blu-rays are still being released.
I have a PS3 which gets updated regularly anyway. Heck, they will even add 3D capability via firmware patch (not that I need it....).