If anyone has followed GameTrailers Pach-Attack, the online show with Wedbush Morgan Securities analyst Michael Pachter, it s taken on a much more subdued approach since the debut.  Gone are the misguided attempts at showmanship, putting the focus where it belongs: on Pachter s proliferative prognostications.  He made a couple of interesting ones in the latest episode {link no longer active} while responding to two reader questions.  Answering a question on what will be the bestselling game of 2010, Pachter picked Microsoft’s Halo: Reach,” forecasting the game to sell around 8-9 million units.  He said he doesn’t see any surprises from Nintendo that might move big units this year.  He added that while Activision may have a Call of Duty on slate it wouldn’t be an Infinity Ward developed title, and likely lack the buzz that drives sales of their Modern Warfare titles.  Pachter then addressed a question on the anticipated price of Microsoft’s Natal.  He said the motion controller for Xbox 360 is nothing more than a three-lens camera that costs around $50 to make.  He said given Microsoft’s strategy of building install base for the hardware versus profiting from its sales, he sees that $50 wholesale cost ending up as the product’s suggested retail price.