It may not be the first time you've been able to snag a PSP Go for $150, but you can now rest assured that you'll never pay anything more than that, as Sony has officially knocked another $50 off the handheld's list price. That follows a similar $50 price drop back in October (not to mention a $40 price cut to the regular PSP just last week), although that doesn't seem to have done a whole lot to boost sales of the download-only device. Will this new low, low price make a bigger difference? And, if not, how much lower can it go before
