The difference for me, and probably a lot of gaffers, is that my day one Move cost might be as low as 40/$50. A lot of us already have PS3s and PSeyes. Heck, I might not even need to buy new software since a number of games I own are getting patches! :lol So my entry cost might just be those 40 euros (or less, since there's already reports of retailers like Game discounting on the RRP). If I want two players? Fine - 80/$100.
People can come up with as many ker-azy worst case combos as they like, but beyond that 80 euro investment I highly doubt I will be buying any more hardware. Those setups where people price 4 moves and 4 navcons and a eye etc. etc. ring about as true as the kind of Live costings people used to do when talking about 360's cost (e.g. Live will cost you $50 per year! 5 years in the generation = 5*$50 = $250 = OMG 360 costs $650! More than PS3!). As much as some of us - ahem - pushed those kinds of value equations in the early days of the PS3's life, it ultimately just didn't ring true for most people. Cos most people don't think about incremental and small costs over time. They just look most immediately at their cost of entry.
My day one kinect cost by comparison, if this pricing is true, is $150. It's a flat $150 for everyone, but there's no room for cheaper entry as is possible with Move.